The chemical Caffeic acid phenethyl ester has a designated molecular formula of C17H16O4 and a molecular weight of 284.311 g/mol. Synonyms may include: Capeee, Phenethyl caffeate, 2-phenylethyl 3-(3,4-dihydroxyphenyl)-2-propenoate, UNII-G960R9S5SK (ChemID).