title: ON THE ACTION OF THE VILSMEIER-HAACK REAGENT ON STEROIDAL 19-NOR-DELTA 4-3-KETONES AND DERIVATIVES.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D007202:Indicators and Reagents; D007659:Ketones; D012106:Research; D013256:Steroids
chemical_list: D007202:Indicators and Reagents; D007659:Ketones; D013256:Steroids
keywords: CHEMISTRY; EXPERIMENTAL LAB STUDY; INDICATORS AND REAGENTS; STEROIDS