Summary:  1 H-NMR- und 13 C-NMR-Spektren für das Praktikum Allgemeine Chemie II für Studierende der Chemie... gemessene Spektren: Messungen von Tobias Schär #12;(ppm) 012345678910111213141516 1 H-NMR von tert... -Butanol in CDCl3 #12;(ppm) 012345678910111213141516 1 ...

Source: Mühlemann, Oliver - Institut für Zellbiologie, Universität Bern

Collection: Biology and Medicine

Summary:  -dimensional (1D) 1H NMR experiments are popular in metabolic profiling due to their simplicity and fast... acquisition times, two-dimensional (2D) NMR spectra offer increased spectral resolution as well as atomic... approach for the analysis, information recovery and display of 2D ...

Source: Weston, Ken - Department of Chemistry and Biochemistry, Florida State University

Collection: Chemistry

Summary:  . Chemical shift mapping requires very simple and fast ( < 1h) NMR experiments and has numerous applications... by solution NMR NMR parameters Observables Structural Information Chemical shifts 1 H, 13 C, 15 N, 31 P... to a lyophylized protein ...

Source: Ritort, Felix - Departament de Fisica Fonamental, Universitat de Barcelona

Collection: Physics

Summary:  , with the real-time acquisition of a series of 2D 1 H NMR spectra arising from a mixture of compounds subject... are available. One of these entails collecting a series of 1D spectra, usually involving 1H NMR observation... . To facilitate the recording of ...

Source: Frydman, Lucio - Department of Chemical Physics, Weizmann Institute of Science

Collection: Chemistry

Summary:  Nanoliter-Volume 1 H NMR Detection Using Periodic Stopped-Flow Capillary Electrophoresis Dean L... -Champaign, Urbana, Illinois 61801 Recent advances in the analysis of nanoliter volumes using 1H NMR microcoils have... , the 1H ...

Source: Andrews, Anne M. - Huck Institutes of the Life Sciences, Pennsylvania State University

Collection: Biology and Medicine

Summary:  studies are high quality NMR spectra recorded with good sensitivity and spectral reso- lution... measured at a static magnetic field of 24 T (corresponding to a 1H frequency between 900 and 1000 MHz... nuclei and hence more resonance lines in the NMR spectra; this increases ...

Source: Wider, Gerhard - Institut für Molekularbiologie und Biophysik, Eidgenössische Technische Hochschule Zürich (ETHZ)

Collection: Biotechnology ; Biology and Medicine

Summary:  Cerebrospinal fluid (CSF): Multiplesclerosis (MS) pattern-recognition applying 1 H NMR and statistical methods... of Neurology, FCM, Campinas-SP,13083-970. Keywords: Multiple sclerosis, 1 H NMR, metabolomic, statistical... several spectroscopic methodologies. Among ...

Source: Ferreira, Márcia M. C. - Instituto de Química, Universidade Estadual de Campinas

Collection: Chemistry

Summary:  to micro-coil NMR probe. 1 H NMR spectra of 0.2 mM ibuprofen (A) after direct sample injection into the NMR... patients. HPLC-NMR work for targeted metabolite profiling Shimadzu LC system with UV/Vis detector... -plate autosampler are being used to carry out ...

Source: Raftery, Dan - Department of Chemistry, Purdue University

Collection: Chemistry

Summary:  analysis was carried out with XWIN-NMR 3.5. The1H flip angle (16 dB attenuation/50 W amplifier, 6.5 µs... .; Pross, A.; Shannon, J. S.; Sternhell, S. Aust. J. Chem. 1970, 23 (7), 1421-9. Figure 2. (i)1H NMR... .; Bertagnolli, H.; Schmitt- Willich, H.; Albert, K. J. ...

Source: Andrews, Anne M. - Huck Institutes of the Life Sciences, Pennsylvania State University

Collection: Biology and Medicine

Summary:  MHz) 1H-decoupled 13C NMR spectrum showing the metabolisation of [2,3-13C]propionate in the presence... be obtained for 1H of water, thus enabling NMR microscopy of individ- ual plant and mammalian cells (Aiken et... (Petroff 1975). #12;399 Figure 3. ...

Source: Hemminga, Marcus A. - Department of Molecular Physics, Wageningen Universiteit

Collection: Physics ; Biology and Medicine

Summary:  is tuned to 1 H/2 H frequencies and the lower coil to 1 H/13 C frequencies. The observe-volumes of both... by using one or both of the 1H/13 C frequencies, and a combination of experiments can be run... and Right- INADEQUATE (phase-sensitive and ...

Source: Raftery, Dan - Department of Chemistry, Purdue University

Collection: Chemistry

Summary:  -line coupling of CE to 1H NMR.23,24 However, electric field application across the separation capillary... NMR technology,31-37 a new method for obtaining stopped-flow microcoil 1H NMR spectra from... .38 Microcoil NMR. The ...

Source: Andrews, Anne M. - Huck Institutes of the Life Sciences, Pennsylvania State University

Collection: Biology and Medicine

Summary:  study by Page et al. indicates that proteins shown by 1D 1H NMR to have clean spectra with dispersed... for reliable NMR-based structure determination. Due to the differences between the 1D 1H NMR spectroscopy used... Collection. ...

Source: Chen, Kuang-Yu - Department of Chemistry and Chemical Biology, Rutgers University; Rost, Burkhard - Department of Biochemistry and Molecular Biophysics, Columbia University

Collection: Biology and Medicine ; Chemistry

Summary:  of Compound 15 S2 1 H NMR Spectrum of Compound 3 S30 1 H NMR Spectrum of Compound 17 S3 13 C NMR Spectrum... of Compound 17 S5 1 H NMR Spectrum of Compound 4 S33 1 ...

Source: Raines, Ronald T. - Departments of Biochemistry & Chemistry, University of Wisconsin at Madison

Collection: Chemistry ; Biology and Medicine

Summary:  -to-single · transition polarization transfer (ST2-PT) in (15N,1H)-TROSY. J Biomol NMR 1998, 12:345-348. With single... A, Marion D, Simorre JP: Improved · sensitivity and resolution in 1H­13C NMR experiments of RNA. J... : Improved ...

Source: Wider, Gerhard - Institut für Molekularbiologie und Biophysik, Eidgenössische Technische Hochschule Zürich (ETHZ)

Collection: Biotechnology ; Biology and Medicine

Summary:  plug-in if you intend to run NMR spectral predictions. 2. You need to download with an scp client (see... values. Stereochemistry is explicitly considered. For 1H shift prediction, either the traditional... are fine but can be changed, if desired. For 1H, the ...

Source: Turro, Nicholas J. - Department of Chemistry, Columbia University

Collection: Chemistry

Summary:  Biology 2003, 13:570­580 #12;Because 1 H nuclei couple to 15 N nuclei (scalar coupling), the 1 H NMR... dimension from a 3D [15 N,1 H]-TROSY-HNCA spectrum. (d) Same spectral region as in (c), but extracted from... ) Results ...

Source: Wider, Gerhard - Institut für Molekularbiologie und Biophysik, Eidgenössische Technische Hochschule Zürich (ETHZ)

Collection: Biotechnology ; Biology and Medicine

Summary:  S16 1 H and 13 C NMR Spectra (see p S3) Me N-i-Pr #12;S17 1 H and 13 C NMR Spectra (see p S3) Me... NBn #12;S18 1 H and 13 C NMR Spectra (see p S4) NBn #12;S19 1 H ...

Source: Collum, David B. - Department of Chemistry and Chemical Biology, Cornell University

Collection: Chemistry

Summary:  S31 1 H and 13 C NMR Spectra (see p S10) NHBn Me Ph 10 #12;S32 1 H and 13 C NMR Spectra (see p S10... ) NHBn Me Ph 11 #12;S33 1 H and 13 C NMR Spectra (see p S11) NH-i-Pr n-Bu NH-i-Pr n-Bu 12 Me Me 13 ...

Source: Collum, David B. - Department of Chemistry and Chemical Biology, Cornell University

Collection: Chemistry

Summary:  and resolution in NMR spectra of biological macromolecules In a two-dimensional [15 N,1 H]-correlation experiment... - nuclear two-spin systems, such as 15N­1H and aromatic 13C­1H, the NMR signal of each nucleus is split... ...

Source: Riek, Roland - Structural Biology Laboratory, Salk Institute for Biological Studies

Collection: Biology and Medicine ; Chemistry

Summary:  1 H-NMR- und 13 C-NMR-Spektren für das Praktikum Allgemeine Chemie für Studierende in Biologie und... Minor Chemie Messungen: Tobias Schär #12;(ppm) 012345678910111213141516 1 H-NMR von Salicylsäure in CDCl... 3 #12;(ppm) 012345678910111213141516 1 ...

Source: Mühlemann, Oliver - Institut für Zellbiologie, Universität Bern

Collection: Biology and Medicine

Summary:  1 H NMR signals under high-speed magic angle spinning and high-field conditions is demonstrated... spectra via 1 H NMR signals now forms the basis of modern multidimensional spectroscopic techniques... transfer techniques that are based on scalar cou- plings, and ...

Source: Ishii, Yoshitaka - Department of Chemistry, University of Illinois at Chicago

Collection: Chemistry

Summary:  of the detection region. NMR Spectroscopy. 1H NMR spectra were obtained using a Varian Inova 500 (11.7 T) 89-mm... are shown as two- dimensional contour plots (NMR chromatograms) in Figure 3. The x-axis represents the 1H... at 325 °C for ...

Source: Andrews, Anne M. - Huck Institutes of the Life Sciences, Pennsylvania State University

Collection: Biology and Medicine

Summary:  the first commercially available 800 MHz 1 H WB 89 mm NMR spectrometer. SUPPORTING INFORMATION Sample... 75 I.3 Solid State 17 O NMR as a probe for structural studies of proteins in biomembranes Vincent... .K. Key words oxygen-17, solid state NMR, MAS, peptide, vesicles, hydrogen-bond, ...

Source: Watts, Anthony - Biomembrane Structure Unit, Department of Biochemistry, University of Oxford

Collection: Biology and Medicine

Summary:  markers [4,8­11] and (3) explore in vivo protein function and activity [3,12­14]. 1 H NMR spectrum... with a triple-res- onance, z-axis gradient cryoprobe. 1 H NMR spectra were collected with 128 transients at 298... . Ten duplicate 1 ...

Source: Powers, Robert - Department of Chemistry, University of Nebraska-Lincoln

Collection: Chemistry

Summary:  -state NMR, 1 H and 15 N detection. The limit of such an approach is that of the NMR spectral resolution... in water with a correlation time of under 20 ns, which is fast enough to obtain high resolution 1 H NMR... 30 kHz on ...

Source: Institut de Biologie Physico-Chimique CNRS, Physico-Chimie Moléculaire des Membranes Biologiques

Collection: Chemistry ; Biology and Medicine

Summary:  Contents S1 Table of Contents S2 400 MHz 1 H NMR spectrum of compound 5 in DMSO-d6. S3 400 MHz 13 C NMR... spectrum of compound 5 in DMSO-d6. S4 400 MHz 1 H NMR spectrum of compound 6 in CDCl3. S5 400 MHz 13 C NMR... spectrum ...

Source: Raines, Ronald T. - Departments of Biochemistry & Chemistry, University of Wisconsin at Madison

Collection: Chemistry ; Biology and Medicine

Summary:  spectrometer (300 MHz 1H) Transistor­transistor logic control NMR magnet (7 T) Figure 1 Schematic diagram... was recorded with analogous timings and spectral widths, yet incorporating an initial 1 H 13 C transfer before... multiple 13 C-1 ...

Source: Frydman, Lucio - Department of Chemical Physics, Weizmann Institute of Science

Collection: Chemistry

Summary:  , the standard test for 1H NMR sensitiv- ity of high-field instruments consists of a single scan of 0... coils. The first significant develop- ment involved Varian's use of 1.7-mm tubes for both 1H and 13C NMR... , solenoidal mi- crocoils have been fabricated by ...

Source: Andrews, Anne M. - Huck Institutes of the Life Sciences, Pennsylvania State University

Collection: Biology and Medicine

Summary:  of these alternatives more convenient than that in Eq. 2. Fig. 1. Comparison between 2D magnitude TOCSY 1H NMR spectra... techniques where 2D 1 H-X spectral correlations are com- bined with spatial localization methods (30... is not just to measure but to correlate ...

Source: Frydman, Lucio - Department of Chemical Physics, Weizmann Institute of Science

Collection: Chemistry

Summary:  Br + CuCN THF/Et2O 0° 1 H-NMR (300 MHz, CDCl3) 6.41 (s, 1H), 6.38 (s, 1H), 6.02 (ddd, J = 9.9, 3.9, 2... .13(100), 230.08(49). see supplemantal material for JACS 1995, 117, 10143 B. Assign the 1 H-NMR and 13 ...

Source: Glaser, Rainer - Department of Chemistry, University of Missouri-Columbia

Collection: Chemistry

Summary:  . Shown is the overlay of two 2D heteronuclear 1H-15N correlated NMR spectra of an 15N... ). TROSY-based 1H-15N correlated NMR spectra of the GroES 72 kDa heptamer alone (left) and in complex... filters in two- dimensional ...

Source: Foster, Mark P. - Department of Biochemistry, Ohio State University

Collection: Biology and Medicine

Summary:  CHO N-i-Pr Yield: 87%. 1 H NMR (400 MHz, CDCl3): ! 7.45 (1H, d, J = 5.6 Hz), 3.20 (1H, m), 1... -i-Pr Yield: 76%. 1 H NMR (400 MHz, CDCl3): ! 3.66 ...

Source: Collum, David B. - Department of Chemistry and Chemical Biology, Cornell University

Collection: Chemistry

Summary:  Sofia. 2008. "Backbone 1 H, 13 C, and 15 N NMR Assignments for the Cyanothece 51142 Protein cce_0567... and thus enhanced hydrogen release from the Li-N-H system as observed using 1 H magic-angle spinning (MAS... the spectral features of surface species from the bulk ...

Source: Pacific Northwest National Laboratory, Data Quality Objectives Program, Visual Sample Plan

Collection: Environmental Management and Restoration Technologies

Summary:  sensitivity 1H NMR spectra ever reported from low microliter-volume samples. While increased magnetic field... 787 from the Barnett Institute. JA005537R Figure 1. 1H NMR spectra of TEAB. (A) Capillary filled... the indirect dimension, sine-bell multiplication in both ...

Source: Andrews, Anne M. - Huck Institutes of the Life Sciences, Pennsylvania State University

Collection: Biology and Medicine

Summary:  of California-San Diego, 9500 Gillman Drive, La Jolla CA 92093. Figure 1. (A) 1H-decoupled 23Na NMR spectrum... yields 1H-23Na dipolar sideband patterns that are indistinguishable from their conventional 2D NMR... the 1H-23Na ...

Source: Frydman, Lucio - Department of Chemical Physics, Weizmann Institute of Science

Collection: Chemistry

Summary:  J couplings between 1 H, 15 N and 13 C allow through-bond correlations across the peptide bond. NMR... -dimensional NMR spectrum. Through-bond correlation spectrum between the hydrogen (1 H) and the nitrogen (15 N... to one NH-moiety. The axes of the ...

Source: Wider, Gerhard - Institut für Molekularbiologie und Biophysik, Eidgenössische Technische Hochschule Zürich (ETHZ)

Collection: Biotechnology ; Biology and Medicine

Summary:  demonstrate that the spectral resolution in both the 1H and 15N dimensions can be enhanced at high field (e... ) the 15N and 1H slices from a Bruker Avance 600 MHz NMR spectrometer; B and D) the 15N and 1H slices from... in ...

Source: Weston, Ken - Department of Chemistry and Biochemistry, Florida State University

Collection: Chemistry

Summary:  , utilizing 1H experiments on an n-hexane/ CDCl3 sample as a model. Because of the limited spectral resolution... for this basic test, yielding a 1H NMR spectrum consisting of a doublet split by a J15 N-1 H 90 Hz coupling... . ...

Source: Frydman, Lucio - Department of Chemical Physics, Weizmann Institute of Science

Collection: Chemistry

Summary:  .G. Webb, R.L. Magin, J.V. Sweedler, Nanoliter volume sample cells for 1 H-NMR: application to on- line... .G. Webb, R.L. Magin, J.V. Sweedler, 1 H- NMR on the nanoliter scale: application to static and on... , A.G. Webb, J.V. Sweedler, Nanoliter- volume 1 ...

Source: Andrews, Anne M. - Huck Institutes of the Life Sciences, Pennsylvania State University

Collection: Biology and Medicine

Summary:  was centered at 157.86 MHz and the 123Te spectral carrier frequency was centered at 130.04 MHz. 1H NMR spectra... and the solvent was(MgSO 4 ) removed in vacuo to give 7 as a red liquid (0.59 g, yield 65%); 1H NMR, d 7.39 (d, J... insert was ...

Source: Brown, Michael F. - Department of Chemistry, University of Arizona

Collection: Chemistry

Summary:  of the protein­lanthanide complex from 1D 1H and 13C NMR spectra. The pseudocontact shifts are used to position... D 1H NMR spectrum of a lysed cell captures its metabolic state. The metabolome directly measures... component analysis is a well-established statistical ...

Source: Powers, Robert - Department of Chemistry, University of Nebraska-Lincoln

Collection: Chemistry

Summary:  in 98% yield, and was used without further purification. Spectral data. 1 H NMR (CDCl3, 300 MHz) 7... in a 90% yield, and thioester 2 was obtained in a 92% yield. Thioester 1. 1 H NMR (DMSO-d6, 300 MHz) 8... .26 ppm; MS (ESI) m/z 204.25 (M+ = ...

Source: Raines, Ronald T. - Departments of Biochemistry & Chemistry, University of Wisconsin at Madison

Collection: Chemistry ; Biology and Medicine

Summary:  of interest using eq 4. The NMR measurements were done on a BRUKER DRX 600 and DRX 750 spectrometer using [1 H... with 1D 1H NMR spectra of sucrose samples containing 0, 50, 100, 200, 300, 400, 500, 600, and 700 mM Na... by measuring 1D 1 ...

Source: Wider, Gerhard - Institut für Molekularbiologie und Biophysik, Eidgenössische Technische Hochschule Zürich (ETHZ)

Collection: Biotechnology ; Biology and Medicine

Summary:  [±1100 Hz] * (B) Aliased (fast FT) Spectrum Fig. 6 Single scan 1 H ultrafast 3D NMR spectra of n... correlate 1 H and 15 N peaks of a given amide group with the carbonyl 13 C peak belonging to the previous... of 1 H-enhanced 15 N sites ...

Source: Frydman, Lucio - Department of Chemical Physics, Weizmann Institute of Science

Collection: Chemistry

Summary:  ........................................................................................ page S1 Tabulation of 1 H and 13 C NMR spectral peaks for compounds 3... Information for Miduturu & Silverman, J. Org. Chem. page S2 Tabulation of 1 H and 13 C ...

Source: Silverman, Scott K. - Department of Chemistry, University of Illinois at Urbana-Champaign

Collection: Chemistry ; Biology and Medicine

Summary:  an analytical methodol- ogy based on chemometric analyses of 1H NMR spectral data to identify the presence... Study of Brazilian Gasoline Quality Using Hydrogen Nuclear Magnetic Resonance (1H NMR) Spectroscopy... magnetic resonance ...

Source: Ferreira, Márcia M. C. - Instituto de Química, Universidade Estadual de Campinas

Collection: Chemistry

Summary:  ­Madison, Madison, WI 53706 Page Contents Page Contents S1 Table of Contents S39 1 H NMR Spectrum of Compound 17 S2... 31 P NMR Spectrum of Compound 17 S4 1 H NMR Spectrum of Compound 3 S42 1 H ...

Source: Raines, Ronald T. - Departments of Biochemistry & Chemistry, University of Wisconsin at Madison

Collection: Chemistry ; Biology and Medicine

Summary:  - cused such experiment on the 1 H NMR response arising from the methyl group of alanine, dissolved... , thus enabling the realization of 1H-based experiments. Figure 4B illustrates the results arising from... at a 10 mM concentration in a 12 wt% DSCG in D2O solution. The ensuing 2D ...

Source: Frydman, Lucio - Department of Chemical Physics, Weizmann Institute of Science

Collection: Chemistry

Summary:  available 800 MHz 1H WB 89 mm NMR spectrometer. Supporting Information Available: Details for the sample... Solid-State 17 O NMR as a Probe for Structural Studies of Proteins in Biomembranes Vincent Lemai... to deliver this informa- tion of biological and pharmaceutical importance. Solid-state ...

Source: Watts, Anthony - Biomembrane Structure Unit, Department of Biochemistry, University of Oxford

Collection: Biology and Medicine

Summary:  interactions.26,27 Figure 1: 1 H-NMR spectra of extracts of neurons (a), astrocytes (b), and cocultures of both... and to prevent glutamine carbamate formation in the media.31 After recording 1 H- and 13 C-NMR spectra, EDTA... .3.3 Recording of NMR spectra ...

Source: Diekmann, Martin - Institut für Ökologie und Evolutionsbiologie, Universität Bremen

Collection: Environmental Sciences and Ecology

Summary:  , J couplings be- tween 1H, 15N and 13C allow through- bond correlations across the peptide bond. NMR... that suitably interact during the mixing time. Figure 2 presents an example of a 2-D NMR spectrum. A 2-D [15N,1H... by the ...

Source: Hardy, Jeanne - Department of Chemistry, University of Massachusetts at Amherst

Collection: Chemistry

Summary:  , J couplings be- tween 1H, 15N and 13C allow through- bond correlations across the peptide bond. NMR... that suitably interact during the mixing time. Figure 2 presents an example of a 2-D NMR spectrum. A 2-D [15N,1H... by the ...

Source: Wider, Gerhard - Institut für Molekularbiologie und Biophysik, Eidgenössische Technische Hochschule Zürich (ETHZ)

Collection: Biotechnology ; Biology and Medicine

Summary:  . All rights reserved. Keywords: Magnetic resonance spectroscopy; 2D 1 H NMR; Spatial localization... data points to be transformed over a maximum range of Dkmax ¼ jDmceGeDt1=DOj . For the typical 1 H NMR... peak arises from each of these two immiscible phases, a ...

Source: Frydman, Lucio - Department of Chemical Physics, Weizmann Institute of Science

Collection: Chemistry

Summary:  A Solid-State NMR Method for Solution of Zeolite Crystal Structures Darren H. Brouwer, Richard J... crystal structures that combines powder XRD and nuclear magnetic resonance (NMR) spectroscopy in which... NMR, which probes the distance-dependent dipolar interactions between naturally abundant 29 Si nuclei

Source: Levitt, Malcolm H. - School of Chemistry, University of Southampton

Collection: Chemistry

Summary:  - seconds. In SOFAST-HMQC NMR, longitudinal 1 H spin relaxation is enhanced (Pervushin et al. 2002... during the 1 H detection period. Due to the large effective spectral spreads brought about by oscillatory... - power refocusing pulses applied at rates SWH or 2SWH, ...

Source: Frydman, Lucio - Department of Chemical Physics, Weizmann Institute of Science

Collection: Chemistry

Summary:  loadings of 1H HR-MAS NMR data suggested that this separation occurs due to spectral domains situated in 3... Analytica Chimica Acta 595 (2007) 3­8 Chemometric analysis applied in 1 H HR-MAS NMR and FT-IR data... This paper describes the ...

Source: Ferreira, Márcia M. C. - Instituto de Química, Universidade Estadual de Campinas

Collection: Chemistry

Summary:  HMQC and amHSQC NMR experiments, as given by the signal per unit time of 2D 15N-1H correlation spectra... structure can be more naturally followed by real-time NMR spectral changes.4-6 An important limitation... the indirect-domain spectral components, are sampled in ...

Source: Frydman, Lucio - Department of Chemical Physics, Weizmann Institute of Science

Collection: Chemistry

Summary:  : Those with odd mass numbers have "spin 1/2", e.g. 1H, 15N, 13C, 31P, 19F. Those with even mass numbers... .g. 1H), E << kT, so at equilibrium, the two states are nearly equally populated {e.g. out of a million... 1H nuclei in an 800 MHz spectrometer (18.1 T ...

Source: Hardy, Jeanne - Department of Chemistry, University of Massachusetts at Amherst

Collection: Chemistry

Summary:  to rank binding affinities for ligands based on NMR screens that use 1D 1 H NMR line... . For instance, the multistep NMR screen combines one-dimensional (1D) 1 H NMR line-broadening experiments and 2D... event is identified ...

Source: Powers, Robert - Department of Chemistry, University of Nebraska-Lincoln

Collection: Chemistry

Summary:  -dimensional (2D) NMR experiments (using 1H active nuclei) in the early 1980s culminated in the determination... refinement methods for NMR struc- ture determination, including the use of coupling constants, 13C shifts, 1H... determinations in solution. J Am Chem Soc ...

Source: Clore, G. Marius - Laboratory of Chemical Physics. National Institutes of Health

Collection: Biology and Medicine

Summary:  -induced photorearrangements and silene formation from an ortho-(methoxymethyl)phenylsilacyclobutane." 1 H NMR spectra were... data: 1 H NMR (200 MHz), = 7.78 (d, 1H), 7.56 (m, 2H), 7.37 (m, 6H), 4.36 (s, 2H), 3.09 (s, 3H), ...

Source: Leigh, William J. - Department of Chemistry, McMaster University

Collection: Chemistry

Summary:  .8 T (1 H frequency = 800 MHz) solid state NMR spectrometer equipped with a 3.2 mm HCN Balun probe (at 10... NMR spectra from uniformly 13 C, 15 N enriched bacteriorhodospin (bR) purified from H. sali- narium... and connectivities. This study confirms that high resolution solid state NMR ...

Source: Watts, Anthony - Biomembrane Structure Unit, Department of Biochemistry, University of Oxford

Collection: Biology and Medicine

Summary:  of the proteins was assayed using standard patch­clamp methods [25]; (vi) finally, 1 H and 13 C NMR spectra were... -helices. Spectral congestion can be overcome by removing a number of resonances from the NMR spectra... to crucial spectral crowding issues. In this ...

Source: Institut de Biologie Physico-Chimique CNRS, Physico-Chimie Moléculaire des Membranes Biologiques

Collection: Chemistry ; Biology and Medicine

Summary:  were carried out using an 18.8 T Varian/Magnex (1 H frequency=800 MHz) wide-bore solid state NMR... . The spectral width was set to 100.00 kHz. 1 H­13 C cross polarization (CP) was achieved with a 57 kHz 1 H... ). Since the ...

Source: Watts, Anthony - Biomembrane Structure Unit, Department of Biochemistry, University of Oxford

Collection: Biology and Medicine

Summary:  HETCOR NMR 19 F­31 P HETCOR NMR spectrum like 1 H­13 C HMQC is the best way to establish the connectivity... ­31 P HETCOR NMR spectrum. A long distance 19 F­31 P correlative NMR experiment like 1 H­13 C hetero... COSY ...

Source: Huang, Jianbin - College of Chemistry, Peking University

Collection: Chemistry

Summary:  ratios gI, is the poorer signal-to-noise ratios (S/N) that characterize them in comparison to 1 H NMR... of the higher Larmor frequency in which, for a given external field strength, the 1 H NMR ac- quisition takes... within a single transient,[13] including ...

Source: Frydman, Lucio - Department of Chemical Physics, Weizmann Institute of Science

Collection: Chemistry

Summary:  ­1 H dipolar interactions was achieved by standard gated continuous-wave or pulsed radio... with 1 H (50 W to 500 W) and 13 C (150 W to 1000 W) radio-frequency amplifiers. Excitation pulses (90... °) for the single-pulse, inversion-recovery, and SLF-DROSS measurements ranged from 2 s to 4 s. High-power 13 ...

Source: Brown, Michael F. - Department of Chemistry and Biochemistry, University of Arizona

Collection: Chemistry

Summary:  , solid state, and micro-imaging NMR capabilities. The NMR console is equipped with 1 H/19 F solid state... NMR experiments. For solution NMR experiments, a Bruker 5-mm in- verse triple resonance 1 H{13 C, 15 N... using a ...

Source: Weston, Ken - Department of Chemistry and Biochemistry, Florida State University

Collection: Chemistry

Summary:  of these measurements involved acquiring a train of 2D 1 H-15 N HSQC NMR spectra separated by ca. 4 s; following... interleaving. Figure 2. Comparison between conventional and ultrafast 2D HSQC 15N- 1H NMR spectra recorded... suffered from an initial dead time, ...

Source: Frydman, Lucio - Department of Chemical Physics, Weizmann Institute of Science

Collection: Chemistry

Summary:  illustrates the potential of this simple procedure to retrieve high-resolution NMR data, using 1H NMR data... . Reson., Ser. A 1994, 111, 203. JA048859U Figure 2. (A) 1H FT NMR spectrum of C4H9Cl/CDCl3 recorded... by detuning the spectrometer's ...

Source: Frydman, Lucio - Department of Chemical Physics, Weizmann Institute of Science

Collection: Chemistry

Summary:  : up and down. In the 1 H-NMR spectrum a doublet is observed originating from the protons attached... molecules. [15] NMR with very large molecules 387 #12;Fig. 2. [15 N, 1 H] correlation experiments using... is observed. The dependence applies over the whole spectral ...

Source: Wider, Gerhard - Institut für Molekularbiologie und Biophysik, Eidgenössische Technische Hochschule Zürich (ETHZ)

Collection: Biotechnology ; Biology and Medicine

Summary:  . M. Lederkremer, C. Marino, Carbohyd. Res. 2008, 343, 10-11. SI 2 #12;1 H and 13 C NMR spectral data... compounds, except as otherwise noted. Diastereomeric ratios were determined from 1 H NMR spectra of non... used as the standard for ...

Source: Andreana, Peter R. - Department of Chemistry, Wayne State University

Collection: Chemistry

Summary:  Figure 1. Comparison between single-scan {1 H}13 C NMR spectra of limonene, R-pinene, camphene dissolved... , as determined by spectrophotometric and 1 H NMR measurements. (Bottom) Thermal NMR spectrum arising from a 2 M... regions, 15 ...

Source: Frydman, Lucio - Department of Chemical Physics, Weizmann Institute of Science

Collection: Chemistry

Summary:  hydrated with 20 mM Tris buffer, pH 7.3, prepared from 2 H-depleted 1 H2O (50 wt. %), and dispersed... of the NMR spectrometer, thereby exciting a sufficiently broad spectral bandwidth for 2 H NMR spectroscopy... by 2 H NMR Gary V. Martinez, Emily M. Dykstra, Silvia ...

Source: Brown, Michael F. - Department of Chemistry, University of Arizona

Collection: Chemistry

Summary:  and archipelago molecular structures can be proposed on the basis of the same analytical data ( 1 H and 13 C NMR... , mass spectroscopy, and elemental composition) the hypothesis that 1 H and 13 C NMR provide ambiguous... evaluated. 1 ...

Source: Shaw, John - Department of Chemical and Materials Engineering, University of Alberta

Collection: Fossil Fuels

Summary:  , this remains to be seen. Fig. 6. Real-time identification via 2D ultrafast TOCSY 1 H NMR of a mixture of three... -polarization and ultrafast 2D NMR methods. Both traces corres- pond to single-scan 2D TOCSY 1 H NMR spectra recorded... posi- tions ...

Source: Frydman, Lucio - Department of Chemical Physics, Weizmann Institute of Science

Collection: Chemistry

Summary:  . ICN silica gel (particle size 0.032 - 0.063 mm) was used for flash chromatography. 1 H NMR spectra... relative to Me4Si ( 0.0). Data for 1 H NMR spectra are reported as follows: chemical shift ( ppm... ) as a clear oil: RF 0.57 (3:1 hexanes/EtOAc); ...

Source: Stoltz, Brian M. - Division of Chemistry and Chemical Engineering, California Institute of Technology

Collection: Chemistry

Summary:  -characterized dynamic system, N,N- dimethylacetamide (DMAc), was chosen as a test case. This molecule exhibits a 1 H NMR... by the compounds 2D 1 H exchange NMR spectra. The ultrafast pulse sequence in Fig. 2 was thus attempted on a 10% w... Communication Arrayed ...

Source: Frydman, Lucio - Department of Chemical Physics, Weizmann Institute of Science

Collection: Chemistry

Summary:  Classification of Brazilian vinegars according to their 1 H NMR spectra by pattern recognition... May 2009 Accepted 5 May 2009 Keywords: Vinegar 1 H NMR SIMCA KNN PLS-DA a b s t r a c t This work... describes using 1 H ...

Source: Ferreira, Márcia M. C. - Instituto de Química, Universidade Estadual de Campinas

Collection: Chemistry

Summary:  JOURNAL OF MAGNETIC RESONANCE 56, 207-234 (1984) Homonuclear Two-Dimensional 1 H NMR of Proteins... for homonuclear 2D 1 H NMR studies of proteins are described. A brief survey of the general strategy... for the selection of experimental techniques, the elimination of ...

Source: Wider, Gerhard - Institut für Molekularbiologie und Biophysik, Eidgenössische Technische Hochschule Zürich (ETHZ)

Collection: Biotechnology ; Biology and Medicine

Summary:  dataset consists of 57 1 H NMR spectra from rat urine, obtained during dose- and time-related experiments... . Screenshot of HiRes based on the analysis of 1 H NMR spectra from rat urine, illustrating the functionalities... for comprehensive analysis of ...

Source: Sajda, Paul - Department of Biomedical Engineering, Columbia University

Collection: Biology and Medicine ; Computer Technologies and Information Sciences

Summary:  dimensional (1D) 1H NMR spectrum.[45­47] Because of the inherent variability in biological samples... to align 1D and 2D 1H NMR spectra collected on metabolomic samples.[68,70­72] Stoyanova et al.[68] describe... of the spectrum that correlate with P2 are aligned. ...

Source: Powers, Robert - Department of Chemistry, University of Nebraska-Lincoln

Collection: Chemistry

Summary:  of spectral overlap. For example, in a 2-dimensional (2D) 15 N-resolved [1 H,1 H]- NOESY spectrum NOEs between... t1 2- t1 /2+ t1 /2+ 2 1H PFG 15N 1 J Biomol NMR (2008) 40:175­181 177 123 #12;Fig. 1... ...

Source: Wider, Gerhard - Institut für Molekularbiologie und Biophysik, Eidgenössische Technische Hochschule Zürich (ETHZ)

Collection: Biotechnology ; Biology and Medicine

Summary:  . Table 4. The T1 H and T1H relaxation rates of chitin and pectin 13 C nuclear magnetic resonance (NMR... % of the 13 C NMR signal and is characterized by a T1H value of 21.0 ms. The slowly relaxing component... intensity ence ...

Source: Hemminga, Marcus A. - Department of Molecular Physics, Wageningen Universiteit

Collection: Physics ; Biology and Medicine

Summary:  to the interpolation procedure described in the text. FIG. 3. Comparison between 2D 1 H TOCSY NMR spec- tra collected... that were not present in the synthetic phantom could be seen in the 1D and 2D 1 H NMR spectra... ultrafast acquisitions of 2D ...

Source: Frydman, Lucio - Department of Chemical Physics, Weizmann Institute of Science

Collection: Chemistry

Summary:  of these combinations: chemically induced dynamic nuclear polarization (CIDNP) for enhancing NMR's sensitivity, and 1H... , conditions where the dimeric form predominates.9 Figure 2 presents single-scan 2D 1H TOCSY NMR spectra... are single-pulse "dark" and "light" ...

Source: Frydman, Lucio - Department of Chemical Physics, Weizmann Institute of Science

Collection: Chemistry

Summary:  . The [2-13 C]glycerol scheme pref- FIG. 2. Solution NMR 13 C­1 H heteronuclear correlation spectra of 13 C... resolution., J. Mol. Biol. 194, 531­544 (1987). 18. D. L. Stefano and A. J. Wand, Two-dimensional 1H NMR... that corre- late the 13 CO chemical shift ...

Source: Hong, Mei - Department of Chemistry, Iowa State University

Collection: Chemistry

Summary:  and 282 MHz, respectively). 1 H NMR spectra are reported relative to Me4Si ( 0.0 ppm) or residual CHCl3... ( 7.26 ppm) or CHD2CN 1.94 ppm). Data for 1 H NMR spectra are reported as follows: chemical shift... ) to give amide SI1 (8.19 g, 89.5% yield): mp 50.0-51.0 °C ...

Source: Stoltz, Brian M. - Division of Chemistry and Chemical Engineering, California Institute of Technology

Collection: Chemistry

Summary:  and are uncorrected. The 1H NMR spectra were recorded on a Bruker Avance series 300 spectrometer in CDCl3 using... -Phthaloyl-D-methionine: m.p. 123­124°C; 1H NMR 2.08 (3H, s), 2.42­2.62 (4H, m), 5.15 (1H, m), and 7.75/7.89 ...

Source: Andreana, Peter R. - Department of Chemistry, Wayne State University

Collection: Chemistry

Summary:  a homonuclear 2D TOCSY 1 H NMR acquisition, collected on a Varian iNova 500 MHz NMR spectrometer equipped... at 25 °C. (B) Conventional 2D 1 H­13 C HSQC NMR experiment arising from the acquisition of 128 t1... obtained at the conclusion of the ...

Source: Frydman, Lucio - Department of Chemical Physics, Weizmann Institute of Science

Collection: Chemistry

Summary:  spectral analysis are introduced. In continuation of previous reports on the use of APSY-NMR for sequence... al. 2005) with the (a) (b) 6.011.0 -2000 0 2000 040 0 0 20 40 5(1H) [Hz] 1-4 [Hz] (c) 1-4 [Hz] 5(1H... was investigated by 7.08.09.0 -800 -400 0 400 800 1-3 ...

Source: Wider, Gerhard - Institut für Molekularbiologie und Biophysik, Eidgenössische Technische Hochschule Zürich (ETHZ)

Collection: Biotechnology ; Biology and Medicine

Summary:  was not reproducible. HCA using the incremental linkage method was also performed for the same 1 H HR-MAS NMR spectral... . It appears that 1 H-NMR is the most useful method for such application, since it can be used as a wide... -resolution magic angle spinning ...

Source: Ferreira, Márcia M. C. - Instituto de Química, Universidade Estadual de Campinas

Collection: Chemistry

Summary:  August 13, 1998 A suite of 3D NMR experiments for measuring 15 N­{1 H} NOE, 15 N T1, and 15 N T1 values... for proteins that exhibit extensive spectral overlap in the 2D 1 H­15 N HSQC spectrum. The pulse sequences... . Heteronuclear NMR ...

Source: Clore, G. Marius - Laboratory of Chemical Physics. National Institutes of Health

Collection: Biology and Medicine

Summary:  promising approach, PISEMA, uses the high resolution of the 1 H- 15 N dipolar coupling and the 15 N chemical... 192 7. Future Perspective 7.1 Benefits of solid-state NMR When trying to answer a relatively simple... structural question, solid-state NMR can be perceived as being a valuable tool for the ...

Source: Watts, Anthony - Biomembrane Structure Unit, Department of Biochemistry, University of Oxford

Collection: Biology and Medicine

Summary:  are then individually assayed by chemical shift perturbations in a 2D 1H-15N HSQC NMR spectrum to verify specific... of the gel filtration filtrate by 2D 1H-15N HSQC NMR experiments. Since the NMR experiments are performed... . An example of the ...

Source: Powers, Robert - Department of Chemistry, University of Nebraska-Lincoln

Collection: Chemistry

Summary:  in membranes and the effect of cholesterol: a 1 H­13 C solid-state NMR study at natural abundance Received: 1... DMX400-WB NMR spec- trometer (1 H resonance at 400 MHz, 13 C resonance at 100 MHz) using a Bruker 4-mm... NMR vs 2 H ...

Source: Institut de Biologie Physico-Chimique CNRS, Physico-Chimie Moléculaire des Membranes Biologiques

Collection: Chemistry ; Biology and Medicine

Summary:  interactions, and are the main reasons why large macromolecular complexes produce broadened NMR spectral lines... . c | Solid-state NMR spectral parameters for a drug that is bound at its target site can give... observation as solid (polymorphism determinations) NS Yes Nuclei observable 1 ...

Source: Watts, Anthony - Biomembrane Structure Unit, Department of Biochemistry, University of Oxford

Collection: Biology and Medicine

Summary:  in 1H, 13C, 31P or 15N NMR spectra in the hope that these will reveal the location of the binding sites... field was used for acquiring 1 H-decoupled 59 Co/31 P MAS NMR data. 59Co acquisitions were carried out... nature of a quadrupole relaxation that significantly ...

Source: Frydman, Lucio - Department of Chemical Physics, Weizmann Institute of Science

Collection: Chemistry

Summary:  compound 10 by 6 Li-13 C coupling. A combination of 2-D NMR techniques including 1 H-1 H gCOSY, 1 H-13 C g... . SOC. 2010, 132, 13212­13213 #12;the 6 Li and 15 N NMR spectral data and are well... HMBC, and ...

Source: Collum, David B. - Department of Chemistry and Chemical Biology, Cornell University

Collection: Chemistry