Chromatographic and spectrophotometric methods for the estimation of mebendazole in pharmaceutical products were developed. The flow injection method was based on oxidation by a known excess sodium hypochlorite at pH=9.5. is then reacted with chloranilic acid (CAA) to bleach out its color. absorbance CAA recorded 530 nm. fast, simple, selective, sensitive. chromatographic carried Varian C18 col...