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. Related Entries GST OR GPX Epigenetics DNA – Deoxyribonucleic Acid Cytoplasm Crotonyl