CAS 21438-66-4 appears in our catalog under these names: H–Gly–Phe–βNA, Gly–Phe–β–naphthylamide, Gly-Phe ^b-naphthylamide , H-Gly-Phe-bNA, H-Gly-Phe-βNA 98% (TFA salt). Offered by: GLPBio, Thermo Scientific (Alfa Aesar), Biosynth, Ambeed, Chemat. Available pack sizes: 1g, 250mg, 100mg, 50mg, 500mg, 1000mg, 2000mg, 25mg.