| Record Information | 
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| Version | 5.0 | 
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| Status | Expected but not Quantified | 
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| Creation Date | 2012-09-12 00:44:23 UTC | 
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| Update Date | 2023-02-21 17:26:55 UTC | 
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| HMDB ID | HMDB0039324 | 
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| Secondary Accession Numbers |  | 
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| Metabolite Identification | 
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| Common Name | xi-3-Hydroxy-2-oxobutanoic acid | 
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| Description | xi-3-Hydroxy-2-oxobutanoic acid, also known as 3-hydroxy-alpha-ketobutyrate or beta-hydroxy-alpha-oxobutyric acid, belongs to the class of organic compounds known as short-chain keto acids and derivatives. These are keto acids with an alkyl chain the contains less than 6 carbon atoms. xi-3-Hydroxy-2-oxobutanoic acid has been detected, but not quantified in, fruits and milk and milk products. This could make XI-3-hydroxy-2-oxobutanoic acid a potential biomarker for the consumption of these foods. Based on a literature review very few articles have been published on xi-3-Hydroxy-2-oxobutanoic acid. | 
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| Structure | InChI=1S/C4H6O4/c1-2(5)3(6)4(7)8/h2,5H,1H3,(H,7,8)  | 
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| Synonyms | | Value | Source | 
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 | XI-3-hydroxy-2-oxobutanoate | Generator |  | 3-Hydroxy-alpha-ketobutyrate | HMDB |  | beta-Hydroxy-alpha-oxobutyric acid | HMDB |  | beta-Hydroxy-alpha-ketobutyric acid | HMDB |  
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| Chemical Formula | C4H6O4 | 
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| Average Molecular Weight | 118.088 | 
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| Monoisotopic Molecular Weight | 118.02660868 | 
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| IUPAC Name | 3-hydroxy-2-oxobutanoic acid | 
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| Traditional Name | 3-hydroxy-2-oxobutanoic acid | 
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| CAS Registry Number | Not Available | 
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| SMILES | CC(O)C(=O)C(O)=O  | 
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| InChI Identifier | InChI=1S/C4H6O4/c1-2(5)3(6)4(7)8/h2,5H,1H3,(H,7,8)  | 
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| InChI Key | QWZIITCYKKSZGN-UHFFFAOYSA-N | 
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| Chemical Taxonomy | 
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| Description |  Belongs to the class of organic compounds known as short-chain keto acids and derivatives. These are keto acids with an alkyl chain the contains less than 6 carbon atoms. | 
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| Kingdom | Organic compounds   | 
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| Super Class | Organic acids and derivatives   | 
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| Class | Keto acids and derivatives   | 
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| Sub Class | Short-chain keto acids and derivatives   | 
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| Direct Parent | Short-chain keto acids and derivatives   | 
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| Alternative Parents |  | 
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| Substituents | - Beta-hydroxy acid
 
- Short-chain keto acid
 
- Acyloin
 
- Alpha-keto acid
 
- Hydroxy acid
 
- Monosaccharide
 
- Alpha-hydroxy ketone
 
- Ketone
 
- Secondary alcohol
 
- Monocarboxylic acid or derivatives
 
- Carboxylic acid
 
- Carboxylic acid derivative
 
- Carbonyl group
 
- Hydrocarbon derivative
 
- Organic oxygen compound
 
- Organic oxide
 
- Alcohol
 
- Organooxygen compound
 
- Aliphatic acyclic compound
 
  | 
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| Molecular Framework | Aliphatic acyclic compounds | 
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| External Descriptors | Not Available | 
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| Ontology | 
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| Physiological effect | Not Available | 
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| Disposition |  | 
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| Process | Not Available | 
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| Role |  | 
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| Physical Properties | 
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| State | Not Available | 
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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 | Not Available | 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 Retention Times Underivatized| Chromatographic Method | Retention Time | Reference | 
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 | Measured using a Waters Acquity ultraperformance liquid chromatography (UPLC) ethylene-bridged hybrid (BEH) C18 column (100 mm × 2.1 mm; 1.7 μmparticle diameter). Predicted by Afia on May 17, 2022. Predicted by Afia on May 17, 2022. | 1.79 minutes | 32390414   |  | Predicted by Siyang on May 30, 2022 | 9.9363 minutes | 33406817   |  | Predicted by Siyang using ReTip algorithm on June 8, 2022 | 4.22 minutes | 32390414   |  | AjsUoB = Accucore 150 Amide HILIC with 10mM Ammonium Formate, 0.1% Formic Acid | 122.6 seconds | 40023050   |  | Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid | 1112.9 seconds | 40023050   |  | Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid | 369.5 seconds | 40023050   |  | Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid | 74.6 seconds | 40023050   |  | Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid | 238.1 seconds | 40023050   |  | RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 67.4 seconds | 40023050   |  | Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid | 285.9 seconds | 40023050   |  | BfG_NTS_RP1 =Agilent Zorbax Eclipse Plus C18 (2.1 mm x 150 mm, 3.5 um) with Water:ACN and 0.1% Formic Acid | 354.2 seconds | 40023050   |  | HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate) | 226.6 seconds | 40023050   |  | UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid | 663.4 seconds | 40023050   |  | BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid | 175.9 seconds | 40023050   |  | UFZ_Phenomenex = Kinetex Core-Shell C18 2.6 um, 3.0 x 100 mm, Phenomenex with Water:MeOH and 0.1% Formic Acid | 956.7 seconds | 40023050   |  | SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 233.2 seconds | 40023050   |  | RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 309.1 seconds | 40023050   |  | MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate | 669.3 seconds | 40023050   |  | KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA | 274.3 seconds | 40023050   |  | Meister zic-pHILIC pH9.3 = Merck SeQuant ZIC-pHILIC column with ACN:Water 5mM NH4Ac pH9.3 and 5mM ammonium acetate in water | 287.5 seconds | 40023050   |  
 Predicted Kovats Retention IndicesUnderivatizedDerivatized| Derivative Name / Structure | SMILES | Kovats RI Value | Column Type | Reference | 
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 | xi-3-Hydroxy-2-oxobutanoic acid,1TMS,isomer #1 | CC(O[Si](C)(C)C)C(=O)C(=O)O | 1154.8 | Semi standard non polar | 33892256   |  | xi-3-Hydroxy-2-oxobutanoic acid,1TMS,isomer #2 | CC(O)C(=O)C(=O)O[Si](C)(C)C | 1066.1 | Semi standard non polar | 33892256   |  | xi-3-Hydroxy-2-oxobutanoic acid,1TMS,isomer #3 | CC(O)=C(O[Si](C)(C)C)C(=O)O | 1181.5 | Semi standard non polar | 33892256   |  | xi-3-Hydroxy-2-oxobutanoic acid,2TMS,isomer #1 | CC(O[Si](C)(C)C)C(=O)C(=O)O[Si](C)(C)C | 1270.5 | Semi standard non polar | 33892256   |  | xi-3-Hydroxy-2-oxobutanoic acid,2TMS,isomer #2 | CC(O[Si](C)(C)C)=C(O[Si](C)(C)C)C(=O)O | 1327.4 | Semi standard non polar | 33892256   |  | xi-3-Hydroxy-2-oxobutanoic acid,2TMS,isomer #3 | CC(O)=C(O[Si](C)(C)C)C(=O)O[Si](C)(C)C | 1280.4 | Semi standard non polar | 33892256   |  | xi-3-Hydroxy-2-oxobutanoic acid,3TMS,isomer #1 | CC(O[Si](C)(C)C)=C(O[Si](C)(C)C)C(=O)O[Si](C)(C)C | 1413.9 | Semi standard non polar | 33892256   |  | xi-3-Hydroxy-2-oxobutanoic acid,3TMS,isomer #1 | CC(O[Si](C)(C)C)=C(O[Si](C)(C)C)C(=O)O[Si](C)(C)C | 1388.2 | Standard non polar | 33892256   |  | xi-3-Hydroxy-2-oxobutanoic acid,1TBDMS,isomer #1 | CC(O[Si](C)(C)C(C)(C)C)C(=O)C(=O)O | 1424.3 | Semi standard non polar | 33892256   |  | xi-3-Hydroxy-2-oxobutanoic acid,1TBDMS,isomer #2 | CC(O)C(=O)C(=O)O[Si](C)(C)C(C)(C)C | 1317.1 | Semi standard non polar | 33892256   |  | xi-3-Hydroxy-2-oxobutanoic acid,1TBDMS,isomer #3 | CC(O)=C(O[Si](C)(C)C(C)(C)C)C(=O)O | 1456.4 | Semi standard non polar | 33892256   |  | xi-3-Hydroxy-2-oxobutanoic acid,2TBDMS,isomer #1 | CC(O[Si](C)(C)C(C)(C)C)C(=O)C(=O)O[Si](C)(C)C(C)(C)C | 1701.8 | Semi standard non polar | 33892256   |  | xi-3-Hydroxy-2-oxobutanoic acid,2TBDMS,isomer #2 | CC(O[Si](C)(C)C(C)(C)C)=C(O[Si](C)(C)C(C)(C)C)C(=O)O | 1793.6 | Semi standard non polar | 33892256   |  | xi-3-Hydroxy-2-oxobutanoic acid,2TBDMS,isomer #3 | CC(O)=C(O[Si](C)(C)C(C)(C)C)C(=O)O[Si](C)(C)C(C)(C)C | 1758.5 | Semi standard non polar | 33892256   |  | xi-3-Hydroxy-2-oxobutanoic acid,3TBDMS,isomer #1 | CC(O[Si](C)(C)C(C)(C)C)=C(O[Si](C)(C)C(C)(C)C)C(=O)O[Si](C)(C)C(C)(C)C | 2039.2 | Semi standard non polar | 33892256   |  | xi-3-Hydroxy-2-oxobutanoic acid,3TBDMS,isomer #1 | CC(O[Si](C)(C)C(C)(C)C)=C(O[Si](C)(C)C(C)(C)C)C(=O)O[Si](C)(C)C(C)(C)C | 2007.6 | Standard non polar | 33892256   |  
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 | GC-MS Spectra| Spectrum Type | Description | Splash Key | Deposition Date | Source | View | 
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 | Predicted GC-MS | Predicted GC-MS Spectrum - xi-3-Hydroxy-2-oxobutanoic acid GC-MS (Non-derivatized) - 70eV, Positive | splash10-00dm-9000000000-c5fcc422fa0de530d8a9 | 2017-09-01 | Wishart Lab | View Spectrum |  | Predicted GC-MS | Predicted GC-MS Spectrum - xi-3-Hydroxy-2-oxobutanoic acid GC-MS (2 TMS) - 70eV, Positive | splash10-00kb-7910000000-118df9503ad80c5dabfa | 2017-10-06 | Wishart Lab | View Spectrum |  | Predicted GC-MS | Predicted GC-MS Spectrum - xi-3-Hydroxy-2-oxobutanoic acid GC-MS (Non-derivatized) - 70eV, Positive | Not Available | 2021-10-12 | Wishart Lab | View Spectrum |  | Predicted GC-MS | Predicted GC-MS Spectrum - xi-3-Hydroxy-2-oxobutanoic acid GC-MS (Non-derivatized) - 70eV, Positive | Not Available | 2021-10-12 | Wishart Lab | View Spectrum |  
 MS/MS Spectra| Spectrum Type | Description | Splash Key | Deposition Date | Source | View | 
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 | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - xi-3-Hydroxy-2-oxobutanoic acid  10V, Positive-QTOF | splash10-0uxr-2900000000-b864e37d7498e32681b1 | 2016-08-01 | Wishart Lab | View Spectrum |  | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - xi-3-Hydroxy-2-oxobutanoic acid  20V, Positive-QTOF | splash10-0udi-9700000000-e0b4b333a76700a2250d | 2016-08-01 | Wishart Lab | View Spectrum |  | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - xi-3-Hydroxy-2-oxobutanoic acid  40V, Positive-QTOF | splash10-0a4i-9100000000-f1040853a7d12574a6d3 | 2016-08-01 | Wishart Lab | View Spectrum |  | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - xi-3-Hydroxy-2-oxobutanoic acid  10V, Negative-QTOF | splash10-00xr-9500000000-8c48669b820611f80189 | 2016-08-03 | Wishart Lab | View Spectrum |  | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - xi-3-Hydroxy-2-oxobutanoic acid  20V, Negative-QTOF | splash10-00di-9000000000-b1522273ffa241be6af6 | 2016-08-03 | Wishart Lab | View Spectrum |  | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - xi-3-Hydroxy-2-oxobutanoic acid  40V, Negative-QTOF | splash10-05fr-9000000000-318256d0a438b723a0f9 | 2016-08-03 | Wishart Lab | View Spectrum |  | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - xi-3-Hydroxy-2-oxobutanoic acid  10V, Positive-QTOF | splash10-0002-9000000000-02daccae6dd59f82b8ad | 2021-09-22 | Wishart Lab | View Spectrum |  | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - xi-3-Hydroxy-2-oxobutanoic acid  20V, Positive-QTOF | splash10-0002-9000000000-00ba25458eb6c0cc2940 | 2021-09-22 | Wishart Lab | View Spectrum |  | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - xi-3-Hydroxy-2-oxobutanoic acid  40V, Positive-QTOF | splash10-0002-9000000000-db8c4c2ec1add8b902ff | 2021-09-22 | Wishart Lab | View Spectrum |  | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - xi-3-Hydroxy-2-oxobutanoic acid  10V, Negative-QTOF | splash10-05fr-9000000000-2dcd2f20c9e98cde083e | 2021-09-22 | Wishart Lab | View Spectrum |  | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - xi-3-Hydroxy-2-oxobutanoic acid  20V, Negative-QTOF | splash10-0ab9-9000000000-e1010e724cd2da8b00e0 | 2021-09-22 | Wishart Lab | View Spectrum |  | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - xi-3-Hydroxy-2-oxobutanoic acid  40V, Negative-QTOF | splash10-0a4i-9000000000-9a36623c9b9dd9c6afd1 | 2021-09-22 | Wishart Lab | View Spectrum |  
 NMR Spectra| Spectrum Type | Description | Deposition Date | Source | View | 
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 | 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 |  
 IR Spectra| Spectrum Type | Description | Deposition Date | Source | View | 
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 | Predicted IR Spectrum | IR Ion Spectrum (Predicted IRIS Spectrum, Adduct: [M-H]-) | 2023-02-04 | FELIX lab | View Spectrum |  | Predicted IR Spectrum | IR Ion Spectrum (Predicted IRIS Spectrum, Adduct: [M+H]+) | 2023-02-04 | FELIX lab | View Spectrum |  | Predicted IR Spectrum | IR Ion Spectrum (Predicted IRIS Spectrum, Adduct: [M+Na]+) | 2023-02-04 | FELIX lab | View Spectrum |  
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