| Record Information |
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| Version | 5.0 |
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| Status | Detected but not Quantified |
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| Creation Date | 2012-09-11 19:02:13 UTC |
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| Update Date | 2023-02-21 17:24:03 UTC |
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| HMDB ID | HMDB0034233 |
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| Secondary Accession Numbers | |
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| Metabolite Identification |
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| Common Name | 2-Butenal |
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| Description | 2-Butenal (CAS: 4170-30-3), also known as crotonaldehyde, belongs to the class of organic compounds known as enals. These are alpha,beta-unsaturated aldehydes of the general formula RC=C-CH=O in which the aldehydic C=O function is conjugated to a C=C triple bond at the alpha,beta position. The (E)-form of 2-butenal predominates (>95%). 2-Butenal can undergo polycondensation with phenols to synthesize phenolic resins. It is an eye, skin, and mucous membrane irritant. (E)-2-Butenal is found in fruits and vegetables (e.g. tomato juice, strawberry aroma). |
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| Structure | InChI=1S/C4H6O/c1-2-3-4-5/h2-4H,1H3/b3-2+ |
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| Synonyms | | Value | Source |
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| (2E)-BUT-2-enal | ChEBI | | (e)-Crotonaldehyde | ChEBI | | 1-Formylpropene | ChEBI | | Aldehyde crotonique | ChEBI | | beta-Methylacrolein | ChEBI | | Crotonal | ChEBI | | Crotonic aldehyde | ChEBI | | Crotylaldehyde | ChEBI | | Methylpropenal | ChEBI | | Propylene aldehyde | ChEBI | | trans-2-Butenal | ChEBI | | trans-2-Butenaldehyde | ChEBI | | trans-But-2-enal | ChEBI | | trans-Crotonaldehyde | ChEBI | | b-Methylacrolein | Generator | | Β-methylacrolein | Generator | | 2-Butenal, (e)-isomer | HMDB | | (2E)-2-Butenal | HMDB | | (e)-2-Butenal | HMDB | | (e)-But-2-en-1-al | HMDB | | 2(e)-Butenal | HMDB | | 2-Butenaldehyde | HMDB | | But-2-en-1-al | HMDB | | Crotonaldehyde | HMDB | | trans-2-Buten-1-al | HMDB | | trans-Crotonal | HMDB | | 2-Butenal | ChEBI |
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| Chemical Formula | C4H6O |
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| Average Molecular Weight | 70.0898 |
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| Monoisotopic Molecular Weight | 70.041864814 |
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| IUPAC Name | (2E)-but-2-enal |
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| Traditional Name | crotonaldehyde |
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| CAS Registry Number | 123-73-9 |
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| SMILES | C\C=C\C=O |
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| InChI Identifier | InChI=1S/C4H6O/c1-2-3-4-5/h2-4H,1H3/b3-2+ |
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| InChI Key | MLUCVPSAIODCQM-NSCUHMNNSA-N |
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| Chemical Taxonomy |
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| Description | Belongs to the class of organic compounds known as enals. These are an alpha,beta-unsaturated aldehyde of general formula RC=C-CH=O in which the aldehydic C=O function is conjugated to a C=C triple bond at the alpha,beta position. |
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| Kingdom | Organic compounds |
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| Super Class | Organic oxygen compounds |
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| Class | Organooxygen compounds |
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| Sub Class | Carbonyl compounds |
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| Direct Parent | Enals |
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| Alternative Parents | |
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| Substituents | - Enal
- Organic oxide
- Hydrocarbon derivative
- Short-chain aldehyde
- Aldehyde
- 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 | Liquid |
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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. | 2.68 minutes | 32390414 | | Predicted by Siyang on May 30, 2022 | 9.6523 minutes | 33406817 | | Predicted by Siyang using ReTip algorithm on June 8, 2022 | 3.57 minutes | 32390414 | | Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid | 1306.5 seconds | 40023050 | | Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid | 358.3 seconds | 40023050 | | Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid | 141.5 seconds | 40023050 | | Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid | 265.0 seconds | 40023050 | | RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 69.9 seconds | 40023050 | | Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid | 333.7 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 | 419.3 seconds | 40023050 | | HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate) | 117.9 seconds | 40023050 | | UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid | 758.1 seconds | 40023050 | | BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid | 272.0 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 | 883.4 seconds | 40023050 | | SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 282.2 seconds | 40023050 | | RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 304.1 seconds | 40023050 | | MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate | 595.2 seconds | 40023050 | | KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA | 353.0 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 | 118.8 seconds | 40023050 |
Predicted Kovats Retention IndicesUnderivatized |
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| Spectra |
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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 - 2-Butenal GC-MS (Non-derivatized) - 70eV, Positive | Not Available | 2021-10-12 | Wishart Lab | View Spectrum | | MS | Mass Spectrum (Electron Ionization) | splash10-009f-9000000000-2642f67411e427d975d4 | 2015-03-01 | Not Available | 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 - 2-Butenal 10V, Positive-QTOF | splash10-00di-9000000000-6dbc83fce56e9add9da3 | 2016-08-01 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 2-Butenal 20V, Positive-QTOF | splash10-0fk9-9000000000-a86154a67b4683d77204 | 2016-08-01 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 2-Butenal 40V, Positive-QTOF | splash10-0f6x-9000000000-a1a2541c4047f270e26a | 2016-08-01 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 2-Butenal 10V, Negative-QTOF | splash10-014i-9000000000-48305ae30578976af73c | 2016-08-03 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 2-Butenal 20V, Negative-QTOF | splash10-014i-9000000000-4de0dbfac937aa9c2518 | 2016-08-03 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 2-Butenal 40V, Negative-QTOF | splash10-0udl-9000000000-e5f565b9dcc3f2e46561 | 2016-08-03 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 2-Butenal 10V, Positive-QTOF | splash10-0uk9-9000000000-930b0e2bbb268b285753 | 2021-09-23 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 2-Butenal 20V, Positive-QTOF | splash10-0udl-9000000000-b146ab174aebfe8f37a3 | 2021-09-23 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 2-Butenal 40V, Positive-QTOF | splash10-0udi-9000000000-c512574bc7b38df158d4 | 2021-09-23 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 2-Butenal 10V, Negative-QTOF | splash10-014i-9000000000-1fe3e74f4451b5653b93 | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 2-Butenal 20V, Negative-QTOF | splash10-014i-9000000000-6a804ed7b9cae4dbf0cd | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 2-Butenal 40V, Negative-QTOF | splash10-0f6x-9000000000-6eca02e73c31ee64da5f | 2021-09-25 | 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+Na]+) | 2023-02-04 | FELIX lab | View Spectrum |
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| Biological Properties |
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| Cellular Locations | |
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| Biospecimen Locations | |
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| Tissue Locations | Not Available |
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| Pathways | |
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| Normal Concentrations |
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| Feces | Detected but not Quantified | Not Quantified | Adult (>18 years old) | Both | Normal | | details | | Saliva | Detected but not Quantified | Not Quantified | Adult (>18 years old) | Not Specified | Normal | | details |
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| Abnormal Concentrations |
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| Feces | Detected but not Quantified | Not Quantified | Adult (>18 years old) | Both | Campylobacter jejuni infection | | details | | Feces | Detected but not Quantified | Not Quantified | Adult (>18 years old) | Both | Clostridium difficile infection | | details | | Feces | Detected but not Quantified | Not Quantified | Adult (>18 years old) | Both | Ulcerative Colitis | | details |
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| Associated Disorders and Diseases |
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| Disease References | | Ulcerative colitis |
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- Garner CE, Smith S, de Lacy Costello B, White P, Spencer R, Probert CS, Ratcliffe NM: Volatile organic compounds from feces and their potential for diagnosis of gastrointestinal disease. FASEB J. 2007 Jun;21(8):1675-88. Epub 2007 Feb 21. [PubMed:17314143 ]
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| Associated OMIM IDs | None |
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| External Links |
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| DrugBank ID | DB04381 |
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| Phenol Explorer Compound ID | Not Available |
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| FooDB ID | FDB030138 |
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| KNApSAcK ID | C00050435 |
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| Chemspider ID | 394562 |
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| KEGG Compound ID | C19377 |
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| BioCyc ID | Not Available |
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| BiGG ID | Not Available |
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| Wikipedia Link | Crotonaldehyde |
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| METLIN ID | Not Available |
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| PubChem Compound | 447466 |
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| PDB ID | Not Available |
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| ChEBI ID | 41607 |
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| Food Biomarker Ontology | Not Available |
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| VMH ID | Not Available |
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| MarkerDB ID | Not Available |
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| Good Scents ID | rw1311001 |
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| References |
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| Synthesis Reference | Not Available |
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| Material Safety Data Sheet (MSDS) | Not Available |
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| General References | - Mori Y, Yamada S: Contribution of cation-pi interactions in iminium catalysis. Molecules. 2012 Feb 21;17(2):2161-8. doi: 10.3390/molecules17022161. [PubMed:22354192 ]
- (). Yannai, Shmuel. (2004) Dictionary of food compounds with CD-ROM: Additives, flavors, and ingredients. Boca Raton: Chapman & Hall/CRC.. .
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