Isobutyric acid, also known as 2-methylpropanoic acid, is a carboxylic acid with structural formula (CH3)2-CH-COOH. It is found in the free state in carobs (Ceratonia siliqua), in vanilla and in the root of Arnica dulcis, and as an ethyl ester in croton oil. Isobutyric acid is an isomer of n-butyric acid; they have the same chemical formula C4H8 O...
See: butyric acid. ... (05 Mar 2000) ... 
Type: Term Pronunciation: ī′sō-byū-tir′ik as′id See: butyric acid