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Sigma-Aldrich

Isovaleric acid

99%

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Synonym(s):
3-Methylbutanoic acid, 3-Methylbutyric acid
Linear Formula:
(CH3)2CHCH2COOH
CAS Number:
503-74-2
Molecular Weight:
102.13
Beilstein:
1098522
EC Number:
207-975-3
MDL number:
MFCD00002726
PubChem Substance ID:
24847909
NACRES:
NA.22

vapor pressure

0.38 mmHg ( 20 °C)

Quality Level

200

Assay

99%

form

liquid

autoignition temp.

824 °F

refractive index

n20/D 1.403 (lit.)

bp

175-177 °C (lit.)

mp

−29 °C (lit.)

density

0.925 g/mL at 20 °C (lit.)

SMILES string

CC(C)CC(O)=O

InChI

1S/C5H10O2/c1-4(2)3-5(6)7/h4H,3H2,1-2H3,(H,6,7)

InChI key

GWYFCOCPABKNJV-UHFFFAOYSA-N

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General description

Isovaleric acid, also known as 3-methylbutanoic acid, is commonly used for ester synthesis and as a building block in organic reactions. It is a volatile organic compound present in vinegar bait and is determined by solid phase microextraction. Isovaleric acid inhibits the synthesis of saturated fatty acids. It is a favorable carbon source for cell growth. Moreover, it is a promising odor indicator.

Application

Isovaleric acid inhibits the synthesis of saturated fatty acids.

Pictograms

Corrosion
GHS05

Signal Word

Danger

Hazard Statements

H314

Hazard Classifications

Eye Dam. 1 - Skin Corr. 1B

Storage Class Code

8A - Combustible, corrosive hazardous materials

WGK

WGK 1

Flash Point(F)

176.0 °F - Pensky-Martens closed cup

Flash Point(C)

80 °C - Pensky-Martens closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Biological active esters of the isovaleric acid
Suerbaev, et al.
Eurasian Chemico-Technological Journal, 16, 299-302 (2014)
N Qamaruz-Zaman et al.
Waste management (New York, N.Y.), 32(12), 2426-2430 (2012-07-24)
Research was conducted to determine suitable chemical parameters as indicators of odor from decomposing food wastes. Prepared food scraps were stored in 18 l plastic buckets (2 kg wet weight each) at 20 °C and 8 °C to reproduce high
Xiaojin Song et al.
Journal of agricultural and food chemistry, 61(41), 9876-9881 (2013-09-24)
Aurantiochytrium is an important docosahexaenoic acid (DHA) producer containing two kinds of fatty acid synthesis pathways, that is, the fatty acid synthase pathway (FAS) for saturated fatty acid synthesis and the polyketide synthase pathway (PKS) for polyunsaturated fatty acid synthesis.
Qinxue Wen et al.
Bioresource technology, 143, 695-698 (2013-07-17)
Microalga Chlorella protothecoides can accumulate high proportion of lipids during the heterotrophic growth with glucose as the carbon source. However, its commercial application is restricted due to the high cost of the carbon source. In this study, the wasted activated
Lingling Wang et al.
Microbiology spectrum, 9(2), e0124621-e0124621 (2021-10-21)
The adenoviral DNA is prevalent in adenotonsillectomy specimens from pediatric patients, though the virus seems to be in latent state. The tonsils are at the forefront of airway entry point and are the first line of defense against airway viral
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