1,2,4-Triazolo(4,3-b)pyridazine, 8-methyl-6-(1-piperidinyl)-, hydrochloride 8-Methyl-6-(1-piperidinyl)-1,2,4-triazolo(4,3-b)pyridazine hydrochloride 8-Methyl-6-piperidino-s-triazolo(4,3-b)pyridazine hydrochloride XZ5494400