Spectrophotometric Assay of Nimodipine and Nitrazepam
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Facile Spectrophotometric Determination of Nimodipine and Nitrazepam in Pharmaceutical Preparations
abstract: A simple, accurate and sensitive visible spectrophotometric method for the determination of nimodipine (NMD) and nitrazepam (NTZ) is described. The method is based on the diazotization of reduced drugs with nitrous acid followed by coupling with resorcinol to form colored azo-dye in an alkaline medium. The resulting colored azo-dye exhibits maximum absorption peak at 480 nm for both N...
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