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Analytical Methods Vol - 8 Issue - 7

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Colorimetric estimation of alfuzosin hydrochloride in pharmaceutical preparation based on computational studies

Content Provider	Royal Society of Chemistry (RSC)
Author	Abdelazim, Ahmed. H. Attia, Khalid A. M. El-Abasawi, Nasr M.
Copyright Year	2016
Abstract	Computational and theoretical studies were done electronically and geometrically to find a suitable, selective and sensitive coupling agent applicable for diazocoupling estimation of alfuzosin hydrochloride (ALF). These studies revealed that 8-hydroxyquinoline (8-HQ) fits better with ALF than other coupling agents based on its higher calculated interaction energy. The proposed method is based on the formation of a red colored chromogen through the reaction of ALF with sodium nitrite in acid medium to form a diazonium ion, which was coupled with 8-HQ. Different variables affecting the reactions are optimized. Beer's law is obeyed over the concentration range of 1–12 μg ml−1. The Job's plot analysis was applied and the stoichiometric ratio of ALF : 8-HQ was found to be 1 : 1. The method was successfully applied to the determination of ALF in pharmaceutical formulations with good accuracy and precision.
Starting Page	1798
Ending Page	1805
Page Count	8
File Format	HTM / HTML PDF
ISSN	17599660
Volume Number	8
Issue Number	8
Journal	Analytical Methods
DOI	10.1039/c5ay02635k
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	8-Hydroxyquinoline Stoichiometry Acid Diazonium compound Alfuzosin Ion ALF Sodium nitrite
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry Engineering Chemical Engineering

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