Organic compounds that contain a benzene ring bonded to an alkene bonded to a carboxylic acid in the following structure: C6H5CH=CHCOOH. Includes compounds that are derived from cinnamic acids.
4-Hydroxy-3-methoxycinnamic acid is a ubiquitous plant constituent primarily occurring in seeds and leaves. It arises from the metabolism of phenylalanine and tyrosine.