Abstract

Ashish K. Tewari¹, Anil Mishra¹ and D. S. Bhakuni²

The mass spectral analysis of several analogues of azathioprine has been carried out .The general observation is that the nitroimidazole ring is cleaved first. The C-S-C bond is so labile that the molecular ion peak is not observed by the El technique, however it has been observed by the FD mass technique. A consistent fragmentation pattern has been observed in all the compounds.

azathioprine; nitroimidazole; fragmentation technique

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