CAS 13288-57-8 appears in our catalog under these names: H-Lys(boc)-otbu hydrochloride, 98%, H-Lys(Boc)-OtBu Hydrochloric Acid Salt, >95% (HPLC), H–Lys(Boc)–OtBu·HCl, H-L-Lys(Boc)-OtBu*HCl, Nepsilon-Boc-L-lysine tert-butyl ester hydrochloride, 95% . Offered by: Combi-blocks, TRC, GLPBio, Iris Biotech, Thermo Scientific (Alfa Aesar). Available pack sizes: 1g, 10g, 5g, 25g, 100g, 500mg, 2g, 250mg.