title: CHARACTERIZATION OF DELTA 4-3-OXO-C21-STEROIDS ON THIN-LAYER CHROMATOGRAMS BY "IN SITU" COLOUR REACTIONS.
mesh_terms: D002845:Chromatography; D002855:Chromatography, Thin Layer; D003116:Color; D011278:Pregnanes; D012106:Research; D013256:Steroids
chemical_list: D011278:Pregnanes; D013256:Steroids
keywords: CHROMATOGRAPHY; EXPERIMENTAL LAB STUDY; STEROIDS