CAS: 80-59-1 Molecular Formula: C5H8O2 Molecular Weight (g/mol): 100.12 MDL Number: MFCD00066864 InChI Key: UIERETOOQGIECD-ONEGZZNKSA-N Synonym: tiglic acid,tiglinic acid,cevadic acid,2-methyl-2-butenoic acid,trans-2-methylcrotonic acid,trans-2,3-dimethylacrylic acid,2-methylbut-2-enoic acid,e-2-methyl-2-butenoic acid,trans-2-methyl-2-butenoic acid,e-2,3-dimethylacrylic acid PubChem CID: 125468 ChEBI: CHEBI:9592 IUPAC Name: (E)-2-methylbut-2-enoic acid SMILES: C\C=C(/C)C(O)=O