CAS 91453-04-2 appears in our catalog under these names: Cinnamic acid–d6, TRANS-CINNAMIC-BETA,2,3,4,5,6-D6 ACID, &, Cinnamic acid-d6, 99.75%. Offered by: GLPBio, Sigma-Aldrich, MedChemExpress. Available pack sizes: 10mg, 25mg, 5mg, 250MG, 10 mg, 5 mg.