| Record Information |
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| Version | 5.0 |
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| Status | Expected but not Quantified |
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| Creation Date | 2012-09-11 20:07:31 UTC |
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| Update Date | 2022-03-07 02:54:23 UTC |
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| HMDB ID | HMDB0035176 |
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| Secondary Accession Numbers | |
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| Metabolite Identification |
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| Common Name | 3-Mercapto-2-methylpentanal |
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| Description | 3-Mercapto-2-methylpentanal, also known as 2-methyl-3-sulphanylpentanal, belongs to the class of organic compounds known as alkylthiols. These are organic compounds containing the thiol functional group linked to an alkyl chain. 3-Mercapto-2-methylpentanal is an onion and sulfurous tasting compound. 3-Mercapto-2-methylpentanal has been detected, but not quantified in, several different foods, such as green onion, garden onions (Allium cepa), onion-family vegetables, red onion, and welsh onions (Allium fistulosum). This could make 3-mercapto-2-methylpentanal a potential biomarker for the consumption of these foods. Based on a literature review very few articles have been published on 3-Mercapto-2-methylpentanal. |
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| Structure | InChI=1S/C6H12OS/c1-3-6(8)5(2)4-7/h4-6,8H,3H2,1-2H3 |
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| Synonyms | | Value | Source |
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| 2-Methyl-3-sulphanylpentanal | HMDB |
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| Chemical Formula | C6H12OS |
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| Average Molecular Weight | 132.224 |
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| Monoisotopic Molecular Weight | 132.060885696 |
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| IUPAC Name | 2-methyl-3-sulfanylpentanal |
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| Traditional Name | 2-methyl-3-sulfanylpentanal |
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| CAS Registry Number | 227456-28-2 |
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| SMILES | CCC(S)C(C)C=O |
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| InChI Identifier | InChI=1S/C6H12OS/c1-3-6(8)5(2)4-7/h4-6,8H,3H2,1-2H3 |
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| InChI Key | FSAGSGCELJTQFN-UHFFFAOYSA-N |
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| Chemical Taxonomy |
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| Description | Belongs to the class of organic compounds known as alkylthiols. These are organic compounds containing the thiol functional group linked to an alkyl chain. |
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| Kingdom | Organic compounds |
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| Super Class | Organosulfur compounds |
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| Class | Thiols |
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| Sub Class | Alkylthiols |
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| Direct Parent | Alkylthiols |
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| Alternative Parents | |
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| Substituents | - Alkylthiol
- Organic oxygen compound
- Organic oxide
- Hydrocarbon derivative
- Organooxygen compound
- Carbonyl group
- Aldehyde
- 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 | |
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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 | |
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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. | 3.57 minutes | 32390414 | | Predicted by Siyang on May 30, 2022 | 14.4618 minutes | 33406817 | | Predicted by Siyang using ReTip algorithm on June 8, 2022 | 2.25 minutes | 32390414 | | AjsUoB = Accucore 150 Amide HILIC with 10mM Ammonium Formate, 0.1% Formic Acid | 35.9 seconds | 40023050 | | Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid | 2020.2 seconds | 40023050 | | Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid | 538.8 seconds | 40023050 | | Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid | 193.5 seconds | 40023050 | | Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid | 344.2 seconds | 40023050 | | RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 138.2 seconds | 40023050 | | Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid | 561.5 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 | 705.0 seconds | 40023050 | | HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate) | 394.6 seconds | 40023050 | | UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid | 1083.5 seconds | 40023050 | | BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid | 418.9 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 | 1341.5 seconds | 40023050 | | SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 389.4 seconds | 40023050 | | RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 318.0 seconds | 40023050 | | MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate | 580.6 seconds | 40023050 | | KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA | 559.0 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 | 84.6 seconds | 40023050 |
Predicted Kovats Retention IndicesUnderivatizedDerivatized| Derivative Name / Structure | SMILES | Kovats RI Value | Column Type | Reference |
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| 3-Mercapto-2-methylpentanal,1TMS,isomer #1 | CCC(S[Si](C)(C)C)C(C)C=O | 1215.7 | Semi standard non polar | 33892256 | | 3-Mercapto-2-methylpentanal,1TMS,isomer #1 | CCC(S[Si](C)(C)C)C(C)C=O | 1200.2 | Standard non polar | 33892256 | | 3-Mercapto-2-methylpentanal,1TMS,isomer #2 | CCC(S)C(C)=CO[Si](C)(C)C | 1219.1 | Semi standard non polar | 33892256 | | 3-Mercapto-2-methylpentanal,1TMS,isomer #2 | CCC(S)C(C)=CO[Si](C)(C)C | 1143.9 | Standard non polar | 33892256 | | 3-Mercapto-2-methylpentanal,2TMS,isomer #1 | CCC(S[Si](C)(C)C)C(C)=CO[Si](C)(C)C | 1384.6 | Semi standard non polar | 33892256 | | 3-Mercapto-2-methylpentanal,2TMS,isomer #1 | CCC(S[Si](C)(C)C)C(C)=CO[Si](C)(C)C | 1367.5 | Standard non polar | 33892256 | | 3-Mercapto-2-methylpentanal,1TBDMS,isomer #1 | CCC(S[Si](C)(C)C(C)(C)C)C(C)C=O | 1441.4 | Semi standard non polar | 33892256 | | 3-Mercapto-2-methylpentanal,1TBDMS,isomer #1 | CCC(S[Si](C)(C)C(C)(C)C)C(C)C=O | 1452.7 | Standard non polar | 33892256 | | 3-Mercapto-2-methylpentanal,1TBDMS,isomer #2 | CCC(S)C(C)=CO[Si](C)(C)C(C)(C)C | 1436.3 | Semi standard non polar | 33892256 | | 3-Mercapto-2-methylpentanal,1TBDMS,isomer #2 | CCC(S)C(C)=CO[Si](C)(C)C(C)(C)C | 1385.5 | Standard non polar | 33892256 | | 3-Mercapto-2-methylpentanal,2TBDMS,isomer #1 | CCC(S[Si](C)(C)C(C)(C)C)C(C)=CO[Si](C)(C)C(C)(C)C | 1812.3 | Semi standard non polar | 33892256 | | 3-Mercapto-2-methylpentanal,2TBDMS,isomer #1 | CCC(S[Si](C)(C)C(C)(C)C)C(C)=CO[Si](C)(C)C(C)(C)C | 1808.9 | 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 - 3-Mercapto-2-methylpentanal GC-MS (Non-derivatized) - 70eV, Positive | splash10-056r-9300000000-760fb299538fc8ad571b | 2017-09-01 | Wishart Lab | View Spectrum | | Predicted GC-MS | Predicted GC-MS Spectrum - 3-Mercapto-2-methylpentanal 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 - 3-Mercapto-2-methylpentanal 10V, Positive-QTOF | splash10-001i-5900000000-e06c94d331678356644a | 2016-08-01 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 3-Mercapto-2-methylpentanal 20V, Positive-QTOF | splash10-003r-9500000000-0402a01bd7916775ef79 | 2016-08-01 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 3-Mercapto-2-methylpentanal 40V, Positive-QTOF | splash10-00fu-9000000000-e4989857df44fee7152e | 2016-08-01 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 3-Mercapto-2-methylpentanal 10V, Negative-QTOF | splash10-001j-9800000000-008efcde2f8efe30869a | 2016-08-03 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 3-Mercapto-2-methylpentanal 20V, Negative-QTOF | splash10-001j-9700000000-0387c5c19293a179e3aa | 2016-08-03 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 3-Mercapto-2-methylpentanal 40V, Negative-QTOF | splash10-0a5c-9000000000-1d0982d912380488b962 | 2016-08-03 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 3-Mercapto-2-methylpentanal 10V, Positive-QTOF | splash10-0zmi-9700000000-8c4c4a66b1e72c493aa1 | 2021-09-22 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 3-Mercapto-2-methylpentanal 20V, Positive-QTOF | splash10-004i-9100000000-8fc6813e40a4aeea9ba2 | 2021-09-22 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 3-Mercapto-2-methylpentanal 40V, Positive-QTOF | splash10-0006-9000000000-0919682d94cfca5ea3ba | 2021-09-22 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 3-Mercapto-2-methylpentanal 10V, Negative-QTOF | splash10-001i-3900000000-8b6688d71dcb4b902bb0 | 2021-09-23 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 3-Mercapto-2-methylpentanal 20V, Negative-QTOF | splash10-0089-9000000000-21b50ec39403f6b0359b | 2021-09-23 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 3-Mercapto-2-methylpentanal 40V, Negative-QTOF | splash10-001i-9000000000-9f164fc99e4cea87e08e | 2021-09-23 | Wishart Lab | View Spectrum |
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