Note:  Do not rely on this information. It is very old.

Cinnamic Acid

Cinnamic Acid, an organic acid of composition C7H7CO2H2 occurring in many balsams (Tolu, Peru, storax, etc), and in some benzoin resins. It crystallises in prisms, soluble in hot water, and may be prepared artificially by many different reactions, or obtained from storax. It is used in medicine as an aromatic stimulant, and sometimes to disguise the taste of disagreeable drugs.