title: Gas phase isomeric differentiation of oleanolic and ursolic acids associated with heptakis-(2,6-di-O-methyl)-beta-cyclodextrin by electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry.
authors.affiliation: Changchun Center of Mass Spectrometry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China.
authors.forename: Zhan
authors.initials: Z
authors.lastname: Yu
authors.forename: Meng
authors.initials: M
authors.lastname: Cui
authors.forename: Cunyu
authors.initials: C
authors.lastname: Yan
authors.forename: Fengrui
authors.initials: F
authors.lastname: Song
authors.forename: Zhiqiang
authors.initials: Z
authors.lastname: Liu
authors.forename: Shuying
authors.initials: S
authors.lastname: Liu
authors.forename: Hongxing
authors.initials: H
authors.lastname: Zhang
mesh_terms: D005583:Fourier Analysis; D008958:Models, Molecular; D009828:Oleanolic Acid / Q000737:chemistry*; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods*; D053719:Tandem Mass Spectrometry; D014315:Triterpenes / Q000737:chemistry*; D047392:beta-Cyclodextrins / Q000737:chemistry*; D000097245:Ursolic Acid
chemical_list: D009828:Oleanolic Acid; D014315:Triterpenes; D047392:beta-Cyclodextrins; D000097245:Ursolic Acid; C038119:heptakis(2,6-O-dimethyl)beta-cyclodextrin