title: Identification of 19-norprogesterone in pregnant rat urine.
abstract: The existence of biosynthetic pathways leading to the formation of 19-nor-androgens and corticoids have been established in animals and humans. The exact biologic function of the products of these pathways in vivo has yet to be established; however, it has been shown that they possess pronounced biologic activity when administered exogenously. This report describes the identification of 19-nor-progesterone isolated from the urine of pregnant rats. The procedures used included isolation as the underivatized material and methoxime derivative by thin-layer and high-performance chromatography. The identity was further confirmed by gas chromatography/mass spectral analysis of the isolated product as the 3,20-bis-methoxime derivative. The spectra obtained from the urinary product and the authentic 19-norprogesterone-3,20-bis-methoxime were identical. A possible biologic role for 19-norprogesterone or its precursors is discussed.
authors.affiliation: Department of Obstetrics and Gynecology, Boston University School of Medicine, Massachusetts 02118.
authors.forename: S L
authors.initials: SL
authors.lastname: Dale
authors.forename: S C
authors.initials: SC
authors.lastname: Chattoraj
authors.forename: A
authors.initials: A
authors.lastname: Biswas
authors.forename: A
authors.initials: A
authors.lastname: Gajewski
authors.forename: P
authors.initials: P
authors.lastname: Nuzzo
mesh_terms: D000818:Animals; D002851:Chromatography, High Pressure Liquid; D005260:Female; D009653:Norprogesterones / Q000652:urine*; D011247:Pregnancy; D011270:Pregnancy, Animal / Q000652:urine*; D051381:Rats; D011919:Rats, Inbred Strains
chemical_list: D009653:Norprogesterones