Four simple, rapid and sensitive spectrophotometric methods have been proposed for the determination of enalapril maleate in pharmaceutical formulations. The first method is based on the reaction of carboxylic acid group of enalapril maleate with a mixture of potassium iodate (KIO(3)) and iodide (KI) to form yellow colored product in aqueous medium at 25 +/- 1 degrees C. The reaction is followe...

The charge transfer complexes between phthalocyanine as a donor and benzoquinone derivatives as acceptors vis., 2,3-dichloro-5,6-dicyano-1,4benzoquinone (DDQ), p-chloranil (CHL) and chloranilic acid (CHLA) were synthesis and investigated by using some modern techniques such as; ICP and Nujol mull technique using spectrophotometer, that after identification and using synthesis and spectral metho...

A sensitive spectrofluorimetric method was developed for determination of ciprofloxacin (CPFX), levofloxacin (LEV), gatifloxacin (GAT) and moxifloxacin (MOX) in pure, commercial formulations, human urine and plasma. The method is based on charge-transfer (CT) complex with chloranilic acid. Fluorescence intensity of the complexes was measured at emission wavelength ranging from 445 492 nm with e...

This is the first report on use of two visible spectrophotometric methods for the determination of bupropion hydrochloride (BUPH) in pharmaceuticals and spiked human urine. Bupropion is a second-generation antidepressant agent which is also used in the management of smoking cessation. The methods are based on charge transfer complexation reaction of bupropion base (BUP) as n-electron donor with...