CAS 72850-53-4 appears in our catalog under these names: Ethyl 2-oxo-4-(trifluoromethyl)-2,3-dihydro-1,3-thiazole-5-carboxylate, 95%, Ethyl 2-oxo-4-(trifluoromethyl)-2,3-dihydrothiazole-5-carboxylate, 95+%. Offered by: Combi-blocks, AmBeed. Available pack sizes: 100mg, 1g, 250mg, 5g.