CAS 200353-65-7 appears in our catalog under these names: H-D-Cys(tbu)-oh hydrochloride, 98%, H–D–Cys(tBu)–OH · HCl, H-D-Cys(tBu)-OH·HCl 97%, H-D-Cys(tbu)-oh hcl, 97%, 97%, H-D-CYS(TBU)-OH.HCL, 97%. Offered by: Combi-blocks, GLPBio, Ambeed, Chemat, Fluorochem. Available pack sizes: 1g, 10g, 5g, 25g, 250mg.