CAS: 140-10-3 Molecular Formula: C9H8O2 Molecular Weight (g/mol): 148.161 MDL Number: MFCD00004369 InChI Key: WBYWAXJHAXSJNI-VOTSOKGWSA-N Synonym: cinnamic acid,trans-cinnamic acid,e-cinnamic acid,3-phenylacrylic acid,trans-3-phenylacrylic acid,zimtsaeure,2e-3-phenylprop-2-enoic acid,3-phenylprop-2-enoic acid,3-phenylpropenoic acid PubChem CID: 444539 ChEBI: CHEBI:35697 IUPAC Name: (E)-3-phenylprop-2-enoic acid SMILES: C1=CC=C(C=C1)C=CC(=O)O