1-(1-Methyl-4-(1-oxopropoxy)-4-piperidinyl)ethanone hydrochloride 1-Methyl-4-acetyl-4-propionyloxypiperidine hydrochloride 98694-58-7 ETHANONE, 1-(1-METHYL-4-(1-OXOPROPOXY)-4-PIPERIDINYL)-, HYDROCHLORIDE