CAS 2387-59-9 appears in our catalog under these names: S–Carboxymethyl–L–cysteine, Carbocisteine/ 99.8% (existing batch purity), S-Carboxymethyl-L-cysteine, Carbocisteine. Offered by: GLPBio, TargetMol, Chemat, Hubei YoungXin. Available pack sizes: 100mg, 1g, 500mg, 5g, 5mg, 250mg, 10mg, 25mg.