CAS 887644-62-4 appears in our catalog under these names: (S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-(((4-methoxyphenyl)diphenylmethyl)thio)butanoic acid, 98%, 98%, Fmoc-L-HCys(Mmt)-OH. Offered by: Chemat, Iris Biotech. Available pack sizes: 100mg, 250mg, 1g, 5g, 25g.