The molecule is an aryl sulfate that is trans-caffeic acid in which the phenolic hydrogen at position 3 is replaced by a sulfo group. A metabolite from coffee. It has a role as a human xenobiotic metabolite, a human blood serum metabolite and a human urinary metabolite. It is a monohydroxycinnamic acid and an aryl sulfate. It derives from a trans-caffeic acid. It is a conjugate acid of a caffeic acid 3-sulfate(2-).
(E)-3-(4-hydroxy-3-sulfooxyphenyl)prop-2-enoic acid