Hordenine (hydrochloride), an alkaloid found in plants, inhibits melanogenesis by suppression of cyclic adenosine monophosphate (cAMP) production.

(±)-Jasmonic acid methyl ester induces the synthesis of proteinase inhibitors in plant leaves. In cancer cells it suppresses proliferation and induces apoptosis.

Hippuric acid is an acyl glycine formed by the conjugation of benzoic acid with glycine. Hippuric acid is a normal component of urine and is typically increased with increased consumption of phenolic compounds (tea wine fruit juices).