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3-Methylbutanoic acid
Carboxylic acid with chemical formula (CH3)2CHCH2CO2H CH3CH2 / From Wikipedia, the free encyclopedia
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3-Methylbutanoic acid, also known as β-methylbutyric acid or more commonly isovaleric acid, is a branched-chain alkyl carboxylic acid with the chemical formula (CH3)2CHCH2CO2H. It is classified as a short-chain fatty acid. Like other low-molecular-weight carboxylic acids, it has an unpleasant odor. The compound occurs naturally and can be found in many foods, such as cheese, soy milk, and apple juice.
Quick Facts Names, Identifiers ...
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Names | |
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Preferred IUPAC name
3-Methylbutanoic acid | |
Other names
Delphinic acid 3-Methylbutyric acid Isopentanoic acid Isovaleric acid | |
Identifiers | |
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3D model (JSmol) |
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ChEBI | |
ChEMBL | |
ChemSpider |
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DrugBank |
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ECHA InfoCard | 100.007.251 ![]() |
EC Number |
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KEGG |
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PubChem CID |
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UNII | |
CompTox Dashboard (EPA) |
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Properties | |
C5H10O2 | |
Molar mass | 102.13 g/mol |
Density | 0.925 g/cm3 |
Melting point | −29 °C (−20 °F; 244 K) |
Boiling point | 176.5 °C (349.7 °F; 449.6 K) |
log P | 1.16 |
Acidity (pKa) | 4.8 (H2O) |
-67.7·10−6 cm3/mol | |
Related compounds | |
Related carboxylic acids |
butyric acid β-hydroxybutyric acid β-hydroxy β-methylbutyric acid |
Related compounds |
Valeric acid |
Hazards | |
GHS labelling:[1] | |
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Danger | |
H314 | |
P280, P301+P330+P331, P303+P361+P353, P304+P340+P310, P305+P351+P338, P363 | |
Flash point | 80 °C (176 °F; 353 K) |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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