Abstract

The antipsychotic drug Olanzapine in powder form was 60Co gamma irradiated to investigate in various temperature value. The Electron Paramagnetic Resonance (EPR) spectrum of the irradiated Olanzapine, characterized by g = 2.0030, exhibits an intensity distribution 1:2:1. The room temperature EPR spectra of gamma irradiated Olanzapine was recorded in DMSO solution at frozen state. Temperature behavior of Olanzapine discussed by means of similarities and differences of EPR parameters. Kinetic decay features of radicals induced by gamma irradiation of Olanzapine were also studied. EPR experiments indicated that Olanzapine contained stable free radical species after irradiation and the intensity of the signal is increasing with the absorbed doses suggesting increasing radical concentration in the system.

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