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Spectrophotometric investigation of metopropol-benzyl orange reaction and its application to the assay in pharmaceutical dosage forms
(Farmaco, 1995)
A sensitive spectrophotometric method for the determination of metoprolol tartrate in tablets and ampoules is presented. Using spectrophotometric measurements, it was found that metoprolol tartrate and benzyl orange form ...
Third-order derivative UV spectrophotometry and densitometry for the simultaneous assay of acetylsalicylic acid and salicylic acid in tablet formulations
(Societa Chimica Italiana, 1995)
Third-order derivative spectrophotometry is proposed for simultaneous determination of acetylsalicylic acid and free salicylic acid in sustained-release tablets, and compared with TLC-densitometry. Both methods were evaluated ...
Spectrophotometric determination of bifonazole in pharmaceutical formulations using bromphenol blue
(Farmaco, 1993)
A sensitive spectrophotometric method for the determination of bifonazole is described. Bifonazole was treated with bromphenol blue (BPB) in the presence of citrate buffer (pH 2.5; μ = 0.23). The formed ion-pair complex ...
Coulometric determination of levodopa, methyldopa and carbidopa
(Farmaco, 1990)
Coulometric determination of some thiocompounds
(Farmaco, 1991)
Spectrophotometric determination of diltiazem in dosage forms
(Farmaco, 1992)
A simple and reproducible method for determination of diltiazem in bulk and in dosage forms is presented. The method is based on formation of hydroxamic acid, which reacts with iron (III), forming a complex with a maximum ...
Chlorocoulometric determination of hydrocortisone and hydrocortisone acetate
(Farmaco, 1991)
A chlorocoulometric method for the determination of small amounts of hydrocortisone and hydrocortisone acetate is presented. The method is simple and rapid, the results obtained are accurate and reproducible. It can be ...
Coulometric determination of some antiinflammatory compounds
(Farmaco, 1993)
A method is presented for the chlorocoulometric assay of small amounts of piroxicam and tenoxicam. This assay is carried out directly by coulometrically titrating the investigated substances with electrogenerated chlorine ...