Isovaleric acid is a C5, branched-chain saturated fatty acid. Isopentanoic acid is a colorless liquid with a penetrating odor. It is slightly soluble in water.
Isovaleric acid 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.