Cinnamic acid

Common card · No. 288642

Cinnamic acid is an organic compound with the formula C6H5−CH=CH−COOH. It is a white crystalline compound that is slightly soluble in water, and freely soluble in many organic solvents. Classified as an unsaturated carboxylic acid, it occurs naturally in a number of plants. It exists as both a cis and a trans isomer, although the latter is more common. The cis-isomer is called allocinnamic acid.