title: CHARACTERIZATION OF 20-OXOSTEROIDS BY GAS CHROMATOGRAPHY.
mesh_terms: D006907:17-alpha-Hydroxypregnenolone; D002845:Chromatography; D002849:Chromatography, Gas; D006908:Hydroxyprogesterones; D007664:Ketosteroids; D011284:Pregnenolone; D011374:Progesterone; D012106:Research; D013256:Steroids
chemical_list: D006908:Hydroxyprogesterones; D007664:Ketosteroids; D013256:Steroids; D006907:17-alpha-Hydroxypregnenolone; D011374:Progesterone; D011284:Pregnenolone
keywords: CHROMATOGRAPHY; EXPERIMENTAL LAB STUDY; HYDROXYPREGNENOLONE; HYDROXYPROGESTERONE; PREGNENOLONE; PROGESTERONE; STEROIDS