MASS SPECTRAL STUDIES OF STEROIDAL BENZOTHIAZEPINES

The mass spectra of structurally related steroidal benzothiazepines [4α,6-bc] have been examined which show strong resemblances by giving the same ion peak or corresponding peaks by similar fragmentation so much so that it can be used as of diagnostic value. Common ion peaks at m/z 163 and m/z 95 or 93 can be taken as diagnostic peaks. The fragmentations pathways have been suggested which are tentative in absence of deuterated analoges but different substitutions at C3 compensate the difficiency to some extent.