1-Phthalancarboxylic acid, 3,3-dimethyl-1-(3-(dimethylamino)propyl)-, ethyl ester, hydrochloride 22048-54-0 3,3-Dimethyl-1-(3-(dimethylamino)propyl)-1-phthalancarboxylic acid ethyl ester HCl LU 4-001 hydrochloride