CAS 3397-32-8 appears in our catalog under these names: Z-Phe-osu, 97%, Z–Phe–OSu, Z-L-Phe-OSu, Z-Phe-OSu, 98%, 98%, Z-L-phenylalanine N-hydroxysuccinimide ester, 97%. Offered by: Combi-blocks, GLPBio, Iris Biotech, Chemat, Fluorochem. Available pack sizes: 1g, 25g, 5g, 100g, 500g.