CAS 57432-62-9 appears in our catalog under these names: L-5-Hydroxytryptophan ethyl ester hydrochloride, 98%, (S)-ETHYL 2-AMINO-3-(5-HYDROXY-1H-INDOL-3-YL)PROPANOATE HYDROCHLORIDE, ≥98%, (S)-Ethyl 2-amino-3-(5-hydroxy-1H-indol-3-yl)propanoate hydrochloride, 95.0%. Offered by: Combi-blocks, Chemat, Fluorochem. Available pack sizes: 250mg, 5g, 1g, 25g, 500mg.