Crotonic acid

– ((E)-2-butenoic acid) or is a short-chain unsaturated carboxylic acid, described by the formula CH3CH=CHCO2H. It is also called crotonic acid because it was erroneously thought to be a saponification product of croton oil.


– The univalent radical CH3-CH=CH-CO- derived from crotonic acid.


– (plural crotonylations) is the posttranslational modification of lysine residues in a histone by the introduction of crotonyl groups