A new method for quality control of zinc pyritione pharmaceutical and cosmetic forms

A simple high-performance liquid chromatographic (HPLC) method was develope d to determine zinc pyritione in pharmaceutical and cosmetic products. Reve rsed phase chromatography was conducted rising a C-18 column with an isocra tic mobile phase consisting of a suitable mixture of methanol acetonitrile, and water (30:2.5: 20). The effluent was monitored on a ultraviolet (UV) d etector at 243 nm. The method was validated following International Confere nce on Harmonisation (ICH) suggestions and proven accurate, precise, and sp ecific.