1-(2-Methylphenyl)-3-(1-methyl-4-piperidinyl)isoquinoline hydrochloride 3-(1-Methyl-4-piperidinyl)-1-o-tolyl isoquinoline hydrochloride 92124-18-0 Isoquinoline, 1-(2-methylphenyl)-3-(1-methyl-4-piperidinyl)-, hydrochloride