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Trans-Cinnamic acid
English alias: Trans-3-Phenylacrylic acid; Trans-3-Phenyl-2-propenoic acid; Trans-Cinnamic acid; (2E)-3-phenylprop-2-enoic acid; Cinnamic acid; 3-Phenylacrylic acid; Phenylacrylic acid
CAS number:
EINECS number: 205-398-1
Formula: C9H8O2
Molecular weight: 148.16
Melting point: 131-136 ° C
Boiling point: 264.999 ° C at 760 mmHg
Flash point: 189.53 ° C
Cinnamic acid is used in flavors, synthetic indigo, Allyl cyclohexylpropionate, and certain pharmaceuticals, though its primary use is in the manufacturing of the methyl, ethyl, and benzyl esters for the perfume industry. Cinnamic acid has a honey-like odor; It and its more volatile ethyl ester (ethyl cinnamate) are flavor components in the essential oil of cinnamon, in which related cinnamaldehyde is the major constituent. Cinnamic acid is also part of the biosynthetic shikimate and phenylpropanoid pathways. Its biosynthesis is performed by action of the enzyme phenylalanine ammonia-lyase (PAL) on phenylalanine.