cinnamic acid(redirected from cinnamylic acid)
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A fragrant white crystalline acid, C9H8O2, obtained from cinnamon or from balsams such as storax or made synthetically and used chiefly to manufacture perfumery compounds.
(Elements & Compounds) a white crystalline water-insoluble weak organic acid existing in two isomeric forms; 3-phenylpropenoic acid. The trans- form occurs naturally and its esters are used in perfumery. Formula: C6H5CH:CHCOOH
[C19: from cinnam(on) + -ic; from its being found in cinnamon oil]