63938-98-7 Ammonium, (2-(N-ethylcarbamoyloxy)ethyl)trimethyl-, chloride Ammonium, (2-hydroxyethyl)trimethyl-, chloride, ethylcarbamate Carbamic acid, N-ethyl-, 2-dimethylaminoethyl ester, methochloride Carbamic acid, ethyl-, 2-(trimethylammonio)ethyl ester, chloride Choline, beta-(N-ethylcarbamyloxy)-, chloride Choline, chloride, ethylcarbamate TL 921