CAS 14226-97-2 appears in our catalog under these names: Cysteine Impurity 2, 5-Oxothiomorpholine-3-carboxylic acid, 95%, 5-Oxothiomorpholine-3-carboxylic Acid, >95% (HPLC), Lactam of (S)-Carboxymethyl-(D,L)-cysteine, 5-Oxo-thiomorpholine-3-carboxylic acid 95%. Offered by: Chemat Brand, Combi-blocks, TRC, Mikromol, Ambeed. Available pack sizes: on request, 250mg, 5g, 1g, 25mg, 100mg.