JANSSEN, P A Compounds related to pethidine. I. Mannich bases derived from norpethidine and acetophenones. [electronic resource] - Journal of medicinal and pharmaceutical chemistry Feb 1959 - 105-20 p. digital Publication Type: Journal Article ISSN: 0095-9065 Standard No.: 10.1021/jm50002a008 doi Subjects--Topical Terms: AcetophenonesKetonesMannich BasesMeperidine--analogs & derivatives