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%, ≥98%, (S)-Ethyl 2-amino-3-(5-hydroxy-1H-indol-3-yl)propanoate hydrochloride. Offered by: Combi-blocks, Chemat, Fluorochem. Available pack sizes: 250mg, 5g, 1g, 25g, 500mg.