https://www.selleckchem.com/pr....oducts/trastuzumab.h
The present work aims to develop and validate a simple, rapid, cost-effective, sensitive and extractive spectrophotometric methods for the determination of phosphodiesterase type 5-inhibitor; vardenafil HCl (VARD) in pure and in dosage forms. The developed methods are based on the formation of ion-pair complexes between vardenafil HCl and dyes, namely, bromocresol green (BCG), bromocresol purple (BCP), bromophenol blue (BP, bromothymol blue (BT and eriochrom black T (EBT) in acidic buffer solutions. Different factors affecting t
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