Record Information |
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Version | 5.0 |
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Status | Detected and Quantified |
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Creation Date | 2006-08-13 02:23:00 UTC |
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Update Date | 2023-02-21 17:16:46 UTC |
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HMDB ID | HMDB0003640 |
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Secondary Accession Numbers | |
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Metabolite Identification |
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Common Name | Beta-Leucine |
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Description | Beta-leucine is a metabolite that is in the middle of a controversy over its presence in the human body. While there are reports that claim it as a human metabolite, there are others that deny its existence. Two examples:. Circulating levels of beta-leucine are elevated in the cobalamin-deficient state of pernicious anemia. Levels of leucine, on the other hand, are much lower. It is proposed that leucine 2,3-aminomutase, the cobalamin-dependent enzyme that catalyzes the interconversion of leucine and beta-leucine, is the affected enzyme in pernicious anemia and causes these results by preventing the synthesis of leucine from beta-leucine. The synthesis of leucine by human leukocytes and hair roots and by rat liver extracts has been shown to occur when either branched chain fatty acids or valine metabolites are the substances. The synthesis is dependent upon adenosylcobalamin and is inhibited by intrinsic factor (PMID:7430116 ). Using forms of beta-leucine and leucine that contain several deuterium atoms in place of several hydrogen atoms as internal standards, techniques have been developed which make it possible to detect and quantitate as little as 0.1 mumol/liter of beta-leucine or leucine in human serum and in incubations containing rat liver supernatant. beta-Leucine was not detectable, i.e. less than 0.1 mumol/liter, in any sera from 50 normal human subjects or in any sera from 50 cobalamin-deficient patients. Experiments in which beta-leucine, leucine, isostearic acid, or isocaproic acid were incubated with rat liver supernatant in the presence or absence of adenosylcobalamin or cobalamin-binding protein failed to demonstrate the formation of leucine or beta-leucine or their interconversion under any of the conditions studied. We conclude that beta-leucine is not present in human blood and that the existence of leucine 2,3-aminomutase in mammalian tissues remains to be established (PMID 3356699 ). Beta-leucine is found to be associated with cobalamin deficiency, which is an inborn error of metabolism. |
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Structure | InChI=1S/C6H13NO2/c1-4(2)5(7)3-6(8)9/h4-5H,3,7H2,1-2H3,(H,8,9)/t5-/m0/s1 |
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Synonyms | Value | Source |
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(S)-Homo-beta-val | ChEBI | (S)-Homo-b-val | Generator | (S)-Homo-β-val | Generator | b-Leucine | Generator | Β-leucine | Generator | 3-Amino-4-methylpentanoic acid | MeSH | beta-2-amino-4-Methylvaleric acid | HMDB | L-beta-Leucine | HMDB | (3S)-b-Leucine | Generator, HMDB | (3S)-Β-leucine | Generator, HMDB | beta-Leucine | MeSH |
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Chemical Formula | C6H13NO2 |
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Average Molecular Weight | 131.1729 |
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Monoisotopic Molecular Weight | 131.094628665 |
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IUPAC Name | (3S)-3-amino-4-methylpentanoic acid |
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Traditional Name | β-leucine |
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CAS Registry Number | 5699-54-7 |
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SMILES | CC(C)[C@@H](N)CC(O)=O |
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InChI Identifier | InChI=1S/C6H13NO2/c1-4(2)5(7)3-6(8)9/h4-5H,3,7H2,1-2H3,(H,8,9)/t5-/m0/s1 |
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InChI Key | GLUJNGJDHCTUJY-YFKPBYRVSA-N |
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Chemical Taxonomy |
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Description | Belongs to the class of organic compounds known as beta amino acids and derivatives. These are amino acids having a (-NH2) group attached to the beta carbon atom. |
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Kingdom | Organic compounds |
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Super Class | Organic acids and derivatives |
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Class | Carboxylic acids and derivatives |
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Sub Class | Amino acids, peptides, and analogues |
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Direct Parent | Beta amino acids and derivatives |
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Alternative Parents | |
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Substituents | - Beta amino acid or derivatives
- Amino fatty acid
- Branched fatty acid
- Methyl-branched fatty acid
- Fatty acyl
- Fatty acid
- Amino acid
- Carboxylic acid
- Monocarboxylic acid or derivatives
- Amine
- Primary amine
- Organooxygen compound
- Organonitrogen compound
- Hydrocarbon derivative
- Primary aliphatic amine
- Organic oxide
- Carbonyl group
- Organopnictogen compound
- Organic oxygen compound
- Organic nitrogen compound
- Aliphatic acyclic compound
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Molecular Framework | Aliphatic acyclic compounds |
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External Descriptors | |
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Ontology |
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Physiological effect | |
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Disposition | |
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Process | Not Available |
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Role | Not Available |
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Physical Properties |
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State | Solid |
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Experimental Molecular Properties | Property | Value | Reference |
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Melting Point | Not Available | Not Available | Boiling Point | Not Available | Not Available | Water Solubility | Not Available | Not Available | LogP | 0.778 | Not Available |
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Experimental Chromatographic Properties | Not Available |
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Predicted Molecular Properties | |
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Predicted Chromatographic Properties | Predicted Collision Cross SectionsPredicted Kovats Retention IndicesUnderivatizedDerivatizedDerivative Name / Structure | SMILES | Kovats RI Value | Column Type | Reference |
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Beta-Leucine,1TMS,isomer #1 | CC(C)[C@@H](N)CC(=O)O[Si](C)(C)C | 1212.1 | Semi standard non polar | 33892256 | Beta-Leucine,1TMS,isomer #2 | CC(C)[C@H](CC(=O)O)N[Si](C)(C)C | 1302.6 | Semi standard non polar | 33892256 | Beta-Leucine,2TMS,isomer #1 | CC(C)[C@H](CC(=O)O[Si](C)(C)C)N[Si](C)(C)C | 1330.4 | Semi standard non polar | 33892256 | Beta-Leucine,2TMS,isomer #1 | CC(C)[C@H](CC(=O)O[Si](C)(C)C)N[Si](C)(C)C | 1369.2 | Standard non polar | 33892256 | Beta-Leucine,2TMS,isomer #1 | CC(C)[C@H](CC(=O)O[Si](C)(C)C)N[Si](C)(C)C | 1470.8 | Standard polar | 33892256 | Beta-Leucine,2TMS,isomer #2 | CC(C)[C@H](CC(=O)O)N([Si](C)(C)C)[Si](C)(C)C | 1517.5 | Semi standard non polar | 33892256 | Beta-Leucine,2TMS,isomer #2 | CC(C)[C@H](CC(=O)O)N([Si](C)(C)C)[Si](C)(C)C | 1431.3 | Standard non polar | 33892256 | Beta-Leucine,2TMS,isomer #2 | CC(C)[C@H](CC(=O)O)N([Si](C)(C)C)[Si](C)(C)C | 1603.6 | Standard polar | 33892256 | Beta-Leucine,3TMS,isomer #1 | CC(C)[C@H](CC(=O)O[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C | 1543.8 | Semi standard non polar | 33892256 | Beta-Leucine,3TMS,isomer #1 | CC(C)[C@H](CC(=O)O[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C | 1494.0 | Standard non polar | 33892256 | Beta-Leucine,3TMS,isomer #1 | CC(C)[C@H](CC(=O)O[Si](C)(C)C)N([Si](C)(C)C)[Si](C)(C)C | 1452.2 | Standard polar | 33892256 | Beta-Leucine,1TBDMS,isomer #1 | CC(C)[C@@H](N)CC(=O)O[Si](C)(C)C(C)(C)C | 1415.0 | Semi standard non polar | 33892256 | Beta-Leucine,1TBDMS,isomer #2 | CC(C)[C@H](CC(=O)O)N[Si](C)(C)C(C)(C)C | 1523.8 | Semi standard non polar | 33892256 | Beta-Leucine,2TBDMS,isomer #1 | CC(C)[C@H](CC(=O)O[Si](C)(C)C(C)(C)C)N[Si](C)(C)C(C)(C)C | 1758.9 | Semi standard non polar | 33892256 | Beta-Leucine,2TBDMS,isomer #1 | CC(C)[C@H](CC(=O)O[Si](C)(C)C(C)(C)C)N[Si](C)(C)C(C)(C)C | 1788.2 | Standard non polar | 33892256 | Beta-Leucine,2TBDMS,isomer #1 | CC(C)[C@H](CC(=O)O[Si](C)(C)C(C)(C)C)N[Si](C)(C)C(C)(C)C | 1756.0 | Standard polar | 33892256 | Beta-Leucine,2TBDMS,isomer #2 | CC(C)[C@H](CC(=O)O)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 1928.8 | Semi standard non polar | 33892256 | Beta-Leucine,2TBDMS,isomer #2 | CC(C)[C@H](CC(=O)O)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 1848.3 | Standard non polar | 33892256 | Beta-Leucine,2TBDMS,isomer #2 | CC(C)[C@H](CC(=O)O)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 1801.8 | Standard polar | 33892256 | Beta-Leucine,3TBDMS,isomer #1 | CC(C)[C@H](CC(=O)O[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2181.9 | Semi standard non polar | 33892256 | Beta-Leucine,3TBDMS,isomer #1 | CC(C)[C@H](CC(=O)O[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2126.0 | Standard non polar | 33892256 | Beta-Leucine,3TBDMS,isomer #1 | CC(C)[C@H](CC(=O)O[Si](C)(C)C(C)(C)C)N([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 1856.9 | Standard polar | 33892256 |
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| GC-MS SpectraSpectrum Type | Description | Splash Key | Deposition Date | Source | View |
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Predicted GC-MS | Predicted GC-MS Spectrum - Beta-Leucine GC-MS (Non-derivatized) - 70eV, Positive | splash10-000i-9000000000-b4ef4716fcf2c24852fd | 2017-09-01 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - Beta-Leucine GC-MS (1 TMS) - 70eV, Positive | splash10-00di-9200000000-e6038fb7fedb2b592622 | 2017-10-06 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - Beta-Leucine GC-MS (Non-derivatized) - 70eV, Positive | Not Available | 2021-10-12 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - Beta-Leucine GC-MS (Non-derivatized) - 70eV, Positive | Not Available | 2021-10-12 | Wishart Lab | View Spectrum |
MS/MS SpectraSpectrum Type | Description | Splash Key | Deposition Date | Source | View |
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Experimental LC-MS/MS | LC-MS/MS Spectrum - Beta-Leucine Quattro_QQQ 10V, N/A-QTOF (Annotated) | splash10-00di-9200000000-c312d7b4661374b11fe7 | 2012-07-25 | HMDB team, MONA | View Spectrum | Experimental LC-MS/MS | LC-MS/MS Spectrum - Beta-Leucine Quattro_QQQ 25V, N/A-QTOF (Annotated) | splash10-05fu-9000000000-2f3a81db4c2c8d6143a2 | 2012-07-25 | HMDB team, MONA | View Spectrum | Experimental LC-MS/MS | LC-MS/MS Spectrum - Beta-Leucine Quattro_QQQ 40V, N/A-QTOF (Annotated) | splash10-0a4l-9000000000-0b2e4113ec38ca7843a1 | 2012-07-25 | HMDB team, MONA | View Spectrum | Experimental LC-MS/MS | LC-MS/MS Spectrum - Beta-Leucine LC-ESI-QQ (API3000, Applied Biosystems) 10V, Positive-QTOF | splash10-001i-2900000000-5c08508080e2ead24ed1 | 2012-08-31 | HMDB team, MONA | View Spectrum | Experimental LC-MS/MS | LC-MS/MS Spectrum - Beta-Leucine LC-ESI-QQ (API3000, Applied Biosystems) 20V, Positive-QTOF | splash10-00di-9100000000-e86097bd64d6da7ab50e | 2012-08-31 | HMDB team, MONA | View Spectrum | Experimental LC-MS/MS | LC-MS/MS Spectrum - Beta-Leucine LC-ESI-QQ (API3000, Applied Biosystems) 30V, Positive-QTOF | splash10-00di-9000000000-8f051218b3e657e92bee | 2012-08-31 | HMDB team, MONA | View Spectrum | Experimental LC-MS/MS | LC-MS/MS Spectrum - Beta-Leucine LC-ESI-QQ (API3000, Applied Biosystems) 40V, Positive-QTOF | splash10-0ab9-9000000000-58d7d5408744e17b8aa9 | 2012-08-31 | HMDB team, MONA | View Spectrum | Experimental LC-MS/MS | LC-MS/MS Spectrum - Beta-Leucine LC-ESI-QQ (API3000, Applied Biosystems) 50V, Positive-QTOF | splash10-0a4l-9000000000-918d253495faf90f8c96 | 2012-08-31 | HMDB team, MONA | View Spectrum | Experimental LC-MS/MS | LC-MS/MS Spectrum - Beta-Leucine LC-ESI-QQ , positive-QTOF | splash10-001i-2900000000-5c08508080e2ead24ed1 | 2017-09-14 | HMDB team, MONA | View Spectrum | Experimental LC-MS/MS | LC-MS/MS Spectrum - Beta-Leucine LC-ESI-QQ , positive-QTOF | splash10-00di-9100000000-e86097bd64d6da7ab50e | 2017-09-14 | HMDB team, MONA | View Spectrum | Experimental LC-MS/MS | LC-MS/MS Spectrum - Beta-Leucine LC-ESI-QQ , positive-QTOF | splash10-00di-9000000000-8f051218b3e657e92bee | 2017-09-14 | HMDB team, MONA | View Spectrum | Experimental LC-MS/MS | LC-MS/MS Spectrum - Beta-Leucine LC-ESI-QQ , positive-QTOF | splash10-0ab9-9000000000-ed73d8f252611f502b47 | 2017-09-14 | HMDB team, MONA | View Spectrum | Experimental LC-MS/MS | LC-MS/MS Spectrum - Beta-Leucine LC-ESI-QQ , positive-QTOF | splash10-0a4l-9000000000-918d253495faf90f8c96 | 2017-09-14 | HMDB team, MONA | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Beta-Leucine 10V, Positive-QTOF | splash10-03di-3900000000-1f2691c9c25f658b63fe | 2017-09-01 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Beta-Leucine 20V, Positive-QTOF | splash10-0cka-9400000000-c0d4b51d8c4fce50aede | 2017-09-01 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Beta-Leucine 40V, Positive-QTOF | splash10-0avl-9000000000-437c8e5e44bc9466d6ed | 2017-09-01 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Beta-Leucine 10V, Negative-QTOF | splash10-001i-3900000000-f8aa929f8a383bc99d23 | 2017-09-01 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Beta-Leucine 20V, Negative-QTOF | splash10-01q0-6900000000-e97f92ca9178bdecdf5c | 2017-09-01 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Beta-Leucine 40V, Negative-QTOF | splash10-00y0-9100000000-5664de291dd8fa5bc277 | 2017-09-01 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Beta-Leucine 10V, Positive-QTOF | splash10-00di-9200000000-10aae8c247c96ff0e2d7 | 2021-09-22 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Beta-Leucine 20V, Positive-QTOF | splash10-05fr-9000000000-ffea5f053415eb1d6a60 | 2021-09-22 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Beta-Leucine 40V, Positive-QTOF | splash10-0a4l-9000000000-410a3f8e8cbee04dd8c7 | 2021-09-22 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Beta-Leucine 10V, Negative-QTOF | splash10-001i-1900000000-cd68dd10157ab0851fa1 | 2021-09-22 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Beta-Leucine 20V, Negative-QTOF | splash10-01qm-9300000000-f21cab770afc49f8fa1d | 2021-09-22 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Beta-Leucine 40V, Negative-QTOF | splash10-0006-9000000000-225d2f3b783518b80330 | 2021-09-22 | Wishart Lab | View Spectrum |
NMR SpectraSpectrum Type | Description | Deposition Date | Source | View |
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Experimental 1D NMR | 1H NMR Spectrum (1D, 600 MHz, H2O, experimental) | 2012-12-05 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 100 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 100 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 1000 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 1000 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 200 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 200 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 300 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 300 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 400 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 400 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 500 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 500 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 600 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 600 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 700 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 700 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 800 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 800 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | Predicted 1D NMR | 1H NMR Spectrum (1D, 900 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | Predicted 1D NMR | 13C NMR Spectrum (1D, 900 MHz, D2O, predicted) | 2021-09-24 | Wishart Lab | View Spectrum | Experimental 2D NMR | [1H, 13C]-HSQC NMR Spectrum (2D, 600 MHz, H2O, experimental) | 2012-12-05 | Wishart Lab | View Spectrum |
IR SpectraSpectrum Type | Description | Deposition Date | Source | View |
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Predicted IR Spectrum | IR Ion Spectrum (Predicted IRIS Spectrum, Adduct: [M-H]-) | 2023-02-03 | FELIX lab | View Spectrum | Predicted IR Spectrum | IR Ion Spectrum (Predicted IRIS Spectrum, Adduct: [M+H]+) | 2023-02-03 | FELIX lab | View Spectrum | Predicted IR Spectrum | IR Ion Spectrum (Predicted IRIS Spectrum, Adduct: [M+Na]+) | 2023-02-03 | FELIX lab | View Spectrum |
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