21970-53-6 4-[p-(Dimethylamino)styryl]quinoline monohydrochloride 4M20 HCl 4M2O . HCl 4M2O Hydrochloride NSC63346 Quinoline, 4-(p-dimethylaminostyryl)-, monohydrochloride Quinoline, 4-[p-(dimethylamino)styryl]-, monohydrochloride