CAS 78647-31-1 appears in our catalog under these names: Ethyl 4-oxotetrahydrothiophene-3-carboxylate, Ethyl 4-oxotetrahydrothiophene-3-carboxylate 98%, Ethyl 4-oxotetrahydrothiophene-3-carboxylate, 98%, Ethyl 4-oxotetrahydrothiophene-3-carboxylate, 98%, 98%. Offered by: Biosynth, Ambeed, Fluorochem, Chemat. Available pack sizes: 2,5g, 100mg, 250mg, 1g, 5g.