2-Naphthoic acid, 5,6,7,8-tetrahydro-, 2-(dimethylamino)ethyl ester, hydrochloride 5,6,7,8-Tetrahydro-2-naphthoic acid 2-(dimethylamino)ethyl ester hydrochloride QL2314000 beta-Dimethylaminoethyl beta-tetrahydronaphthoate hydrochloride