CAS 453556-65-5 appears in our catalog under these names: (S)–2–((tert–Butoxycarbonyl)amino)–5，5，5–trifluoropentanoic acid, Boc-L-TfNva-OH, Boc-Nva(5,5,5-triF)-OH 98%, (S)-2-((tert-Butoxycarbonyl)amino)-5,5,5-trifluoropentanoic acid, 98%, 98%, (S)-2-((tert-Butoxycarbonyl)amino)-5,5,5-trifluoropentanoic acid, 97%. Offered by: GLPBio, Iris Biotech, Ambeed, Chemat, Fluorochem. Available pack sizes: 50mg, on request, 100mg, 250mg, 1g.