The development of a safe and scalable oxidation process for the hydroxylation of the azapirone psychotropic agent buspirone ( 1 ) to furnish 6-hydroxybuspirone ( 2 ) is described. A mechanistic understanding of how key process factors affected product quality led to the successful application of FTIR as a process analytical technology (PAT) tool. This enabled real time quality assurance and the development of an effective and efficient manufacturing process. The identification of impurities and the development of recrystallization methods to provide active pharmaceutical ingredients (API) with optimal purity will also be addressed.
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Watson et al. (2004) studied this question.
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