The Oxidative Derivatization Method for the Spectrofluorimetric Determination of Periciazine in Pharmaceutical Preparations

The oxidative derivatization method for the indirect spectrofluorimetric determination of Periciazine has been presented. Potassium hydrogenperoxymonosulfate (Oxone (R)) is proposed as a derivatizing agent for Periciazine, yielding the strongly fluorescent Periciazine sulfoxide. A highly sensitive, simple and rapid method for determination of the Periciazine by fluorescence of its oxidation product with Oxone (R) solution in 0.02 M hydrochloric acid solution (lambda(ex) = 364 nm; lambda(em)=444 nm) has been developed. The calibration plot is linear in concentration range of 0.05-4,00 mu g mL(-1), LOQ (10S) is 0.05 mu g mL(-1). The possibility of quantitative determination of Periciazine in pharmaceutical preparations (Neuleptil (R), 10 mg capsules and Neuleptil (R), a 30 mL 4% oral (solution) drops) has been shown RSD <2.2% (delta< RSD).