title: Octoxynol presence in bear-bile.
abstract: The presence of octoxynol from dried bear-bile was examined. Octoxynol was coextracted when glycolipids by Folch-Suzuki partition method. Octoxynol formed mixed-micelles with glycosphingolipids. The glycolipids were purified by DEAE-Sephadex A-25 column chromatography. The fractions containing mixed micelles were obtained from linear gradient solvent of 0.05M-0.5M ammonium acetate in methanol. HPLC ( Bondapak-NH(2) - linked to a Bondapak-C(18) column) chromatogram showed five peaks. Two possible structures for the fourth peak fraction were proposed as (CH(3))(3)C-CH(2)-C(CH(3))(2)-C(6)H(4)-OR and (CH(3))(3)C-C(CH(3))(2)-CH(2)-C(6)H(4)-OR by NMR spectroscopy. The structure was further confirmed by electrospray tandem mass spectrometry (ESI MS/MS). The spectrum showed a protonated molecule at m/z 559 and three different series of ions with mass difference of 44 were detected in the MS/MS spectrum. Therefore, the structure of the fourth peak fraction from HPLC was confirmed as octoxynol, (CH(3))(3)C-CH(2)-C(CH(3))(2)-C(6)H(4)-(OCH(2)-CH(2))n-OH, based on mass spectrometry and NMR spectroscopy.
authors.affiliation: Department of Chemistry, Ewha Womans University, Seoul, Korea.
authors.forename: G J
authors.initials: GJ
authors.lastname: Jhon
authors.forename: J E
authors.initials: JE
authors.lastname: Hong
authors.forename: H J
authors.initials: HJ
authors.lastname: Yoon
authors.forename: G I
authors.initials: GI
authors.lastname: Rhyu
authors.forename: Y H
authors.initials: YH
authors.lastname: Kim
authors.forename: J S
authors.initials: JS
authors.lastname: Yoo
authors.forename: Y S
authors.initials: YS
authors.lastname: Chang
mesh_terms: D000818:Animals; D001646:Bile / Q000378:metabolism*; D002851:Chromatography, High Pressure Liquid; D005612:Freeze Drying; D017830:Octoxynol / Q000032:analysis* / Q000302:isolation & purification; D001503:Ursidae
chemical_list: D017830:Octoxynol