The Identification of Three New Metabolic Products of Phentermine after Liver Microsomal Incubation

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Abstract
1. N-Hydroxyphentermine (II), α, α-dimethyl-α-nitroso-β-phenylethane (III) and α, α-dimethyl-α-nitro-β-phenylethane (IV) were obtained from ethereal or n-pentane extracts after incubation of phentermine (I) with 10 000 g and 140 000 g liver microsomal preparations of various animal species. 2. The metabolites (II and III) produced the metabonate (IV) under aqueous alkaline conditions. 3. The structure, synthesis and physico-chemical and metabolic characteristics of these compounds are reported.