| Record Information |
|---|
| Version | 5.0 |
|---|
| Status | Expected but not Quantified |
|---|
| Creation Date | 2005-11-16 15:48:42 UTC |
|---|
| Update Date | 2023-02-21 17:15:36 UTC |
|---|
| HMDB ID | HMDB0001318 |
|---|
| Secondary Accession Numbers | |
|---|
| Metabolite Identification |
|---|
| Common Name | 4-Methylpentanal |
|---|
| Description | 4-Methylpentanal, also known as isohexanal or isocaproaldehyde, belongs to the class of organic compounds known as alpha-hydrogen aldehydes. These are aldehydes with the general formula HC(H)(R)C(=O)H, where R is an organyl group. 4-Methylpentanal is an extremely weak basic (essentially neutral) compound (based on its pKa). Within humans, 4-methylpentanal participates in a number of enzymatic reactions. In particular, pregnenolone and 4-methylpentanal can be biosynthesized from 20a,22b-dihydroxycholesterol; which is mediated by the enzyme cholesterol side-chain cleavage enzyme, mitochondrial. In addition, 17a-hydroxypregnenolone and 4-methylpentanal can be biosynthesized from 17a,20a-dihydroxycholesterol through the action of the enzyme cholesterol side-chain cleavage enzyme, mitochondrial. In humans, 4-methylpentanal is involved in the metabolic disorder called the 11-beta-hydroxylase deficiency (cyp11b1) pathway. Outside of the human body, 4-Methylpentanal has been detected, but not quantified in, milk (cow). This could make 4-methylpentanal a potential biomarker for the consumption of these foods. |
|---|
| Structure | InChI=1S/C6H12O/c1-6(2)4-3-5-7/h5-6H,3-4H2,1-2H3 |
|---|
| Synonyms | | Value | Source |
|---|
| 4-Methyl valeraldehyde | ChEBI | | Isocaproaldehyde | ChEBI | | Isohexanal | ChEBI | | 4-Methyl-valeraldehyde | HMDB | | 4-Methylvaleraldehyde | HMDB | | Isocaproaldehyde: 4-methyl-pentanal | HMDB | | Isohexana | HMDB |
|
|---|
| Chemical Formula | C6H12O |
|---|
| Average Molecular Weight | 100.1589 |
|---|
| Monoisotopic Molecular Weight | 100.088815006 |
|---|
| IUPAC Name | 4-methylpentanal |
|---|
| Traditional Name | isocaproaldehyde |
|---|
| CAS Registry Number | 1119-16-0 |
|---|
| SMILES | CC(C)CCC=O |
|---|
| InChI Identifier | InChI=1S/C6H12O/c1-6(2)4-3-5-7/h5-6H,3-4H2,1-2H3 |
|---|
| InChI Key | JGEGJYXHCFUMJF-UHFFFAOYSA-N |
|---|
| Chemical Taxonomy |
|---|
| Description | Belongs to the class of organic compounds known as alpha-hydrogen aldehydes. These are aldehydes with the general formula HC(H)(R)C(=O)H, where R is an organyl group. |
|---|
| Kingdom | Organic compounds |
|---|
| Super Class | Organic oxygen compounds |
|---|
| Class | Organooxygen compounds |
|---|
| Sub Class | Carbonyl compounds |
|---|
| Direct Parent | Alpha-hydrogen aldehydes |
|---|
| Alternative Parents | |
|---|
| Substituents | - Alpha-hydrogen aldehyde
- Organic oxide
- Hydrocarbon derivative
- Aliphatic acyclic compound
|
|---|
| Molecular Framework | Aliphatic acyclic compounds |
|---|
| External Descriptors | |
|---|
| Ontology |
|---|
| Not Available | Not Available |
|---|
| Physical Properties |
|---|
| State | Solid |
|---|
| Experimental Molecular Properties | | Property | Value | Reference |
|---|
| Melting Point | Not Available | Not Available | | Boiling Point | Not Available | Not Available | | Water Solubility | Not Available | Not Available | | LogP | Not Available | Not Available |
|
|---|
| Experimental Chromatographic Properties | Not Available |
|---|
| Predicted Molecular Properties | |
|---|
| Predicted Chromatographic Properties | Predicted Collision Cross SectionsPredicted Retention Times Underivatized| Chromatographic Method | Retention Time | Reference |
|---|
| 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. | 3.42 minutes | 32390414 | | Predicted by Siyang on May 30, 2022 | 14.883 minutes | 33406817 | | Predicted by Siyang using ReTip algorithm on June 8, 2022 | 3.64 minutes | 32390414 | | AjsUoB = Accucore 150 Amide HILIC with 10mM Ammonium Formate, 0.1% Formic Acid | 39.9 seconds | 40023050 | | Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid | 1758.3 seconds | 40023050 | | Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid | 546.1 seconds | 40023050 | | Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid | 209.5 seconds | 40023050 | | Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid | 374.1 seconds | 40023050 | | RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 256.8 seconds | 40023050 | | Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid | 599.3 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 | 657.0 seconds | 40023050 | | HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate) | 212.3 seconds | 40023050 | | UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid | 1154.2 seconds | 40023050 | | BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid | 421.3 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 | 1341.4 seconds | 40023050 | | SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 407.5 seconds | 40023050 | | RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 363.6 seconds | 40023050 | | MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate | 519.1 seconds | 40023050 | | KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA | 529.0 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 | 59.3 seconds | 40023050 |
Predicted Kovats Retention IndicesUnderivatizedDerivatized| Derivative Name / Structure | SMILES | Kovats RI Value | Column Type | Reference |
|---|
| 4-Methylpentanal,1TMS,isomer #1 | CC(C)CC=CO[Si](C)(C)C | 977.6 | Semi standard non polar | 33892256 | | 4-Methylpentanal,1TMS,isomer #1 | CC(C)CC=CO[Si](C)(C)C | 940.0 | Standard non polar | 33892256 | | 4-Methylpentanal,1TMS,isomer #1 | CC(C)CC=CO[Si](C)(C)C | 1011.0 | Standard polar | 33892256 | | 4-Methylpentanal,1TBDMS,isomer #1 | CC(C)CC=CO[Si](C)(C)C(C)(C)C | 1195.3 | Semi standard non polar | 33892256 | | 4-Methylpentanal,1TBDMS,isomer #1 | CC(C)CC=CO[Si](C)(C)C(C)(C)C | 1166.2 | Standard non polar | 33892256 | | 4-Methylpentanal,1TBDMS,isomer #1 | CC(C)CC=CO[Si](C)(C)C(C)(C)C | 1208.4 | Standard polar | 33892256 |
|
|---|
| GC-MS Spectra| Spectrum Type | Description | Splash Key | Deposition Date | Source | View |
|---|
| Predicted GC-MS | Predicted GC-MS Spectrum - 4-Methylpentanal GC-MS (Non-derivatized) - 70eV, Positive | splash10-052f-9000000000-bca9e68c6009fa9d2c06 | 2017-09-01 | Wishart Lab | View Spectrum | | Predicted GC-MS | Predicted GC-MS Spectrum - 4-Methylpentanal GC-MS (Non-derivatized) - 70eV, Positive | Not Available | 2021-10-12 | Wishart Lab | View Spectrum | | Predicted GC-MS | Predicted GC-MS Spectrum - 4-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 |
|---|
| Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 4-Methylpentanal 10V, Positive-QTOF | splash10-0udi-4900000000-fb4261b2e4f6e3a98960 | 2017-09-01 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 4-Methylpentanal 20V, Positive-QTOF | splash10-0ue9-9600000000-55f36997fe423e576d10 | 2017-09-01 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 4-Methylpentanal 40V, Positive-QTOF | splash10-0a4l-9000000000-f50d789cecc6faada43d | 2017-09-01 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 4-Methylpentanal 10V, Negative-QTOF | splash10-0002-9000000000-8d50a1d5a37313cc062a | 2017-09-01 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 4-Methylpentanal 20V, Negative-QTOF | splash10-0002-9000000000-c2f12b63b2a31cb18f8f | 2017-09-01 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 4-Methylpentanal 40V, Negative-QTOF | splash10-0006-9000000000-16c6cae0f1217d0ae1a5 | 2017-09-01 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 4-Methylpentanal 10V, Positive-QTOF | splash10-0a5c-9000000000-9fe8fc0a03ea11fad1f0 | 2021-09-22 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 4-Methylpentanal 20V, Positive-QTOF | splash10-052f-9000000000-a1773bff919aabed87de | 2021-09-22 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 4-Methylpentanal 40V, Positive-QTOF | splash10-05o3-9000000000-dee2ad740e4bdcb04713 | 2021-09-22 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 4-Methylpentanal 10V, Negative-QTOF | splash10-0002-9000000000-658fe53778817eb82301 | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 4-Methylpentanal 20V, Negative-QTOF | splash10-000t-9000000000-e2fa6386c12bc1f2f574 | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 4-Methylpentanal 40V, Negative-QTOF | splash10-0006-9000000000-ef27d33d100c1fd00b13 | 2021-09-25 | Wishart Lab | View Spectrum |
IR Spectra| Spectrum Type | Description | Deposition Date | Source | View |
|---|
| 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 |
|
|---|