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Novel spectrophotometric methods were developed for the determination of fenpropathrin in insecticidal formulations and water samples. The methods were based on the hydrolysis of fenpropathrin with ethanolic KOH to form 3-phenoxy benzaldehyde. The resultant aldehyde group was condensed with anthranilic acid in presence of basic medium to form yellowish red color product having λmaxof 485 nm or condensed with 2-chloro phenyl hydrazine to form pink color product having λmaxof 557 nm. The colordoi:10.1155/2007/296049 fatcat:ytx4cvu7qjhgrggozwh5uaeddq