1118-89-4 16450-41-2 Diethyl L-glutamate hydrochloride Diethyl L-glutaminate hydrochloride Diethyl glutamate hydrochloride EINECS 214-270-4 Glutamic acid diethyl ester hydrochloride Glutamic acid, diethyl ester, hydrochloride, L- L-Glutamic acid, diethyl ester, hydrochloride NSC 12960 NSC 17007