(S)-Methyl 2-amino-3-(3-(methylsulfonyl)phenyl)propanoate hydrochloride

The salt form improves stability, solubility, and handling, while the defined stereochemistry ensures predictable downstream reactivity. (S)-Methyl 2-amino-3-(3-(methylsulfonyl)phenyl)propanoate hydrochloride is a chiral amino acid ester salt used as a synthetic intermediate in pharmaceutical chemistry.It is the hydrochloride salt of a methyl ester of an (S)-configured phenylalanine analogue, bearing a methylsulfonyl substituent on the aromatic ring.