title: Mass spectral studies on steroidal compounds-3 6-aza compounds in the cholestane series (ring B -lactams).
mesh_terms: D001372:Aza Compounds; D002776:Cholestanes; D007769:Lactams; D013058:Mass Spectrometry; D008968:Molecular Conformation
chemical_list: D001372:Aza Compounds; D002776:Cholestanes; D007769:Lactams