4,4-Piperidinediol hydrochloride Infor: CAS No.:40064-34-4 Chemical Name:4,4-Piperidinediol hydrochloride Synonyms:4-PIPERIDONE HYDROCHLORIDE MONOHYDRATE;Piperidine-4,4-diol CBNumber:CB9343629 Molecular Formula:C5H12ClNO2 Molecular Weight:153.61 4,4-Piperidinediol hydrochloride Description 4-Piperidone (hydrochloride hydrate) (Item No. 21961) is an analytical reference standard categorized as a piperidine. 4-Piperidone is a starting material in the synthesis of fentanyl (hydrochloride) with phenethylbromide . The physiological and toxicological properties of this compound are not known. This …