CAS 15951-21-0 appears in our catalog under these names: 4,5,6,7-Tetrahydro-benzothiazol-2-ylamine hydrochloride, 97%, 2-Amino-4,5,6,7-tetrahydrobenzothiazole Hydrochloride, 98%, 2–Amino–4，5，6，7–tetrahydrobenzothiazole Hydrochloride, 4,5,6,7-Tetrahydro-benzothiazol-2-ylaminehydrochloride. Offered by: Combi-blocks, AmBeed, GLPBio, Fluorochem. Available pack sizes: 1g, 25g, 5g, 250mg.