CAS 2304-98-5 appears in our catalog under these names: Z-Arg(NO2)-OH, 98%, 98%, Cbz-Arg(NO2)-OH 98%, Z-Arg(NO2)-OH, 98%, Z–Arg(NO2)–OH, Z-L-Arg(NO2)-OH. Offered by: Chemat, Ambeed, Fluorochem, GLPBio, Iris Biotech. Available pack sizes: 1g, 5g, 25g, 100g.