3-mercapto-L-valine methyl ester hydrochloride, EINECS 251-925-3, Methyl 3-mercapto-D-valinate hydrochloride, Methyl 3-mercapto-D-valinate HCl, D-penicillamine methylester hydrochloride, methyl (S)-2-amino-3-mercapto-3-methylbutanoate hydrochloride, L-penicillamine methyl ester hydrochloride, D,L-penicillamine methyl ester hydrochloride, (R)-penicillamine methyl ester hydrochloride