| Record Information |
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| Version | 5.0 |
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| Status | Expected but not Quantified |
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| Creation Date | 2009-04-06 16:21:36 UTC |
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| Update Date | 2023-02-21 17:17:45 UTC |
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| HMDB ID | HMDB0012241 |
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| Secondary Accession Numbers | |
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| Metabolite Identification |
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| Common Name | Isopropylmaleic acid |
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| Description | 2-Isopropylmaleic acid belongs to the class of organic compounds known as methyl-branched fatty acids. These are fatty acids with an acyl chain that has a methyl branch. Usually they are saturated and contain one or more methyl groups. However, branches other than methyl groups may be present. 2-Isopropylmaleic acid is a moderately acidic compound (based on its pKa). Isopropylmaleic acid is found in the leucine biosynthesis pathway. It is synthesized from oxoisovalerate by 2-isopropylmalate synthase and converted into isopropyl-3-oxosuccinate by 3-isopropylmalate dehydrogenase. The 2- and 3-isopropyl derivatives of isopropylmaleic acid are interconverted by the enzyme isopropylmalate dehydratase. |
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| Structure | InChI=1S/C7H10O4/c1-4(2)5(7(10)11)3-6(8)9/h3-4H,1-2H3,(H,8,9)(H,10,11)/b5-3- |
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| Synonyms | | Value | Source |
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| 2-Isopropylmaleate | ChEBI | | beta-Isopropylmaleate | ChEBI | | 2-Isopropylmaleic acid | Generator | | b-Isopropylmaleate | Generator | | b-Isopropylmaleic acid | Generator | | beta-Isopropylmaleic acid | Generator | | Β-isopropylmaleate | Generator | | Β-isopropylmaleic acid | Generator | | Isopropylmaleate | Generator | | Isopropylmaleic acid | Generator | | (2Z)-2-(1-Methylethyl)-2-butenedioic acid | HMDB |
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| Chemical Formula | C7H10O4 |
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| Average Molecular Weight | 158.1519 |
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| Monoisotopic Molecular Weight | 158.057908808 |
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| IUPAC Name | (2Z)-2-(propan-2-yl)but-2-enedioic acid |
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| Traditional Name | 2-isopropylmaleic acid |
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| CAS Registry Number | 44976-69-4 |
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| SMILES | CC(C)C(=C\C(O)=O)\C(O)=O |
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| InChI Identifier | InChI=1S/C7H10O4/c1-4(2)5(7(10)11)3-6(8)9/h3-4H,1-2H3,(H,8,9)(H,10,11)/b5-3- |
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| InChI Key | NJMGRJLQRLFQQX-HYXAFXHYSA-N |
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| Chemical Taxonomy |
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| Description | Belongs to the class of organic compounds known as methyl-branched fatty acids. These are fatty acids with an acyl chain that has a methyl branch. Usually, they are saturated and contain only one or more methyl group. However, branches other than methyl may be present. |
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| Kingdom | Organic compounds |
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| Super Class | Lipids and lipid-like molecules |
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| Class | Fatty Acyls |
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| Sub Class | Fatty acids and conjugates |
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| Direct Parent | Methyl-branched fatty acids |
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| Alternative Parents | |
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| Substituents | - Methyl-branched fatty acid
- Unsaturated fatty acid
- Dicarboxylic acid or derivatives
- Carboxylic acid
- Carboxylic acid derivative
- Organic oxygen compound
- Organic oxide
- Hydrocarbon derivative
- Organooxygen compound
- Carbonyl group
- 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 | Not Available |
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| Disposition | |
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| Process | |
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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 | 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. | 3.06 minutes | 32390414 | | Predicted by Siyang on May 30, 2022 | 11.8048 minutes | 33406817 | | Predicted by Siyang using ReTip algorithm on June 8, 2022 | 2.52 minutes | 32390414 | | AjsUoB = Accucore 150 Amide HILIC with 10mM Ammonium Formate, 0.1% Formic Acid | 43.8 seconds | 40023050 | | Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid | 1378.3 seconds | 40023050 | | Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid | 378.0 seconds | 40023050 | | Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid | 90.3 seconds | 40023050 | | Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid | 226.1 seconds | 40023050 | | RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 74.9 seconds | 40023050 | | Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid | 395.7 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 | 449.7 seconds | 40023050 | | HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate) | 170.5 seconds | 40023050 | | UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid | 787.2 seconds | 40023050 | | BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid | 339.9 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 | 1244.8 seconds | 40023050 | | SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 248.6 seconds | 40023050 | | RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 326.8 seconds | 40023050 | | MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate | 611.6 seconds | 40023050 | | KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA | 283.3 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 | 270.5 seconds | 40023050 |
Predicted Kovats Retention IndicesDerivatized| Derivative Name / Structure | SMILES | Kovats RI Value | Column Type | Reference |
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| Isopropylmaleic acid,1TMS,isomer #1 | CC(C)/C(=C/C(=O)O[Si](C)(C)C)C(=O)O | 1430.4 | Semi standard non polar | 33892256 | | Isopropylmaleic acid,1TMS,isomer #1 | CC(C)/C(=C/C(=O)O[Si](C)(C)C)C(=O)O | 1361.9 | Standard non polar | 33892256 | | Isopropylmaleic acid,1TMS,isomer #1 | CC(C)/C(=C/C(=O)O[Si](C)(C)C)C(=O)O | 1837.2 | Standard polar | 33892256 | | Isopropylmaleic acid,1TMS,isomer #2 | CC(C)/C(=C/C(=O)O)C(=O)O[Si](C)(C)C | 1432.4 | Semi standard non polar | 33892256 | | Isopropylmaleic acid,1TMS,isomer #2 | CC(C)/C(=C/C(=O)O)C(=O)O[Si](C)(C)C | 1331.2 | Standard non polar | 33892256 | | Isopropylmaleic acid,1TMS,isomer #2 | CC(C)/C(=C/C(=O)O)C(=O)O[Si](C)(C)C | 2016.4 | Standard polar | 33892256 | | Isopropylmaleic acid,2TMS,isomer #1 | CC(C)/C(=C/C(=O)O[Si](C)(C)C)C(=O)O[Si](C)(C)C | 1484.6 | Semi standard non polar | 33892256 | | Isopropylmaleic acid,2TMS,isomer #1 | CC(C)/C(=C/C(=O)O[Si](C)(C)C)C(=O)O[Si](C)(C)C | 1442.6 | Standard non polar | 33892256 | | Isopropylmaleic acid,2TMS,isomer #1 | CC(C)/C(=C/C(=O)O[Si](C)(C)C)C(=O)O[Si](C)(C)C | 1575.6 | Standard polar | 33892256 | | Isopropylmaleic acid,1TBDMS,isomer #1 | CC(C)/C(=C/C(=O)O[Si](C)(C)C(C)(C)C)C(=O)O | 1676.1 | Semi standard non polar | 33892256 | | Isopropylmaleic acid,1TBDMS,isomer #1 | CC(C)/C(=C/C(=O)O[Si](C)(C)C(C)(C)C)C(=O)O | 1572.9 | Standard non polar | 33892256 | | Isopropylmaleic acid,1TBDMS,isomer #1 | CC(C)/C(=C/C(=O)O[Si](C)(C)C(C)(C)C)C(=O)O | 1969.4 | Standard polar | 33892256 | | Isopropylmaleic acid,1TBDMS,isomer #2 | CC(C)/C(=C/C(=O)O)C(=O)O[Si](C)(C)C(C)(C)C | 1680.6 | Semi standard non polar | 33892256 | | Isopropylmaleic acid,1TBDMS,isomer #2 | CC(C)/C(=C/C(=O)O)C(=O)O[Si](C)(C)C(C)(C)C | 1535.6 | Standard non polar | 33892256 | | Isopropylmaleic acid,1TBDMS,isomer #2 | CC(C)/C(=C/C(=O)O)C(=O)O[Si](C)(C)C(C)(C)C | 2043.5 | Standard polar | 33892256 | | Isopropylmaleic acid,2TBDMS,isomer #1 | CC(C)/C(=C/C(=O)O[Si](C)(C)C(C)(C)C)C(=O)O[Si](C)(C)C(C)(C)C | 1897.5 | Semi standard non polar | 33892256 | | Isopropylmaleic acid,2TBDMS,isomer #1 | CC(C)/C(=C/C(=O)O[Si](C)(C)C(C)(C)C)C(=O)O[Si](C)(C)C(C)(C)C | 1845.6 | Standard non polar | 33892256 | | Isopropylmaleic acid,2TBDMS,isomer #1 | CC(C)/C(=C/C(=O)O[Si](C)(C)C(C)(C)C)C(=O)O[Si](C)(C)C(C)(C)C | 1884.3 | Standard 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 - Isopropylmaleic acid GC-MS (Non-derivatized) - 70eV, Positive | splash10-01ox-9800000000-c1dc75af0432077c0384 | 2016-09-22 | Wishart Lab | View Spectrum | | Predicted GC-MS | Predicted GC-MS Spectrum - Isopropylmaleic acid GC-MS (2 TMS) - 70eV, Positive | splash10-00dr-9470000000-5b930a576d9e4924347a | 2017-10-06 | Wishart Lab | View Spectrum | | Predicted GC-MS | Predicted GC-MS Spectrum - Isopropylmaleic 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 - Isopropylmaleic acid 10V, Positive-QTOF | splash10-0006-1900000000-45d74194c5fbfea04a10 | 2015-09-15 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Isopropylmaleic acid 20V, Positive-QTOF | splash10-01ox-7900000000-7e85e22040474be6339c | 2015-09-15 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Isopropylmaleic acid 40V, Positive-QTOF | splash10-014j-9100000000-672bc73595a1f6b84201 | 2015-09-15 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Isopropylmaleic acid 10V, Negative-QTOF | splash10-0bt9-1900000000-48b9e2f85f15343470ae | 2015-09-15 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Isopropylmaleic acid 20V, Negative-QTOF | splash10-090a-5900000000-5c4991c8530e2f8a6eda | 2015-09-15 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Isopropylmaleic acid 40V, Negative-QTOF | splash10-00kb-9400000000-0d37fa6e2313dc5f09a3 | 2015-09-15 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Isopropylmaleic acid 10V, Positive-QTOF | splash10-01ow-6900000000-9e65c798b41317f5b6e9 | 2021-09-23 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Isopropylmaleic acid 20V, Positive-QTOF | splash10-00kb-9200000000-6dfbad4c912b766f9b7e | 2021-09-23 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Isopropylmaleic acid 40V, Positive-QTOF | splash10-014i-9000000000-74dbf533069b6e671b6c | 2021-09-23 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Isopropylmaleic acid 10V, Negative-QTOF | splash10-03xr-9800000000-698f88590edad48bf4c2 | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Isopropylmaleic acid 20V, Negative-QTOF | splash10-02t9-9400000000-d1228db2dbcd7906ae8a | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Isopropylmaleic acid 40V, Negative-QTOF | splash10-014j-9000000000-a5bd12b0d9ab424964cc | 2021-09-25 | Wishart Lab | View Spectrum |
NMR Spectra| Spectrum Type | Description | Deposition Date | Source | View |
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| Predicted 1D NMR | 13C NMR Spectrum (1D, 100 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 100 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 13C NMR Spectrum (1D, 1000 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 1000 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 13C NMR Spectrum (1D, 200 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 200 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 13C NMR Spectrum (1D, 300 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 300 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 13C NMR Spectrum (1D, 400 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 400 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 13C NMR Spectrum (1D, 500 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 500 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 13C NMR Spectrum (1D, 600 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 600 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 13C NMR Spectrum (1D, 700 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 700 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 13C NMR Spectrum (1D, 800 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 800 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 13C NMR Spectrum (1D, 900 MHz, D2O, predicted) | 2021-09-25 | Wishart Lab | View Spectrum | | Predicted 1D NMR | 1H NMR Spectrum (1D, 900 MHz, D2O, predicted) | 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]-) | 2023-02-03 | 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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