A simple, sensitive, rapid and accurate extractive visible spectrophotometric method has been developed for determination of enalapril maleate in API and in pharmaceutical formulations. The method developed was based on formation of pale yellow colour dichloromethane extractable ion-pair complex between the basic nitrogen of the drug and acidic dye bromocresol green in the presence of 0.1M HCl, at absorption maxima of 417 nm. The test solutions were found to follow beer’s law in concentration range of 5-25 µg/ml. The method was successfully developed. The data was subjected to statistical treatment. The method offers advantages of simplicity, sensitivity, accuracy and reproducibility.
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