Utility of Gold Nanoparticles for Spectrofluorimetric and Spectrophotometric Determination of Sildenafil Citrate, Dapoxetine, Vardenafil and Tadalafil in their Dosage Forms and Biological Fluids

2020 ◽  
Vol 10 (3) ◽  
pp. 321-335 ◽  
Author(s):  
Hesham Salem ◽  
Basma E Abdel Aziz
Keyword(s):  
Gold Nanoparticles ◽  
Spectrophotometric Determination ◽  
Biological Fluids ◽  
Dosage Forms ◽  
Sildenafil Citrate

Collaborative Study of the Spectrophotometric Determination of Procainamide Hydrochloride

1976 ◽  
Vol 59 (4) ◽  
pp. 807-810
Author(s):  
Jeffrey C Hamm
Keyword(s):  
Sodium Hydroxide ◽  
Acid Medium ◽  
Spectrophotometric Determination ◽  
Spectrophotometric Method ◽  
Collaborative Study ◽  
Dosage Forms ◽  
Standard Deviations

Abstract The USP analysis for procainamide HCl is titrimetric and relatively nonspecific, capsule and tablet dyes may interfere, and the method is not applicable to coated tablets. In the spectrophotofluorometric method the sample deteriorates when exposed to a xenon source. In the ultraviolet spectrophotometric method reported here, the sample is dispersed in acid medium, possible interferences are extracted in chloroform, base is added, procainamide is extracted in chloroform, the residue is dissolved in sodium hydroxide, and the compound is measured by absorption at 272 nm and comparison with a standard. Recoveries of standards added to capsule, tablet, and injection composites ranged from 99.3 to 102%. Twelve collaborators reported duplicate assay results for all 3 dosage forms with per cent standard deviations for 5 samples ranging from 1.01 to 1.27%. The method has been adopted as official first action.

Utilization of N-bromosuccinimide for the sensitive spectrophotometric determination of pipazethate HCl as antitussive drug in pure and dosage forms

2021 ◽  
Author(s):  
Mohammed A.S. Abourehab ◽  
Mostafa H.K. Shahin ◽  
Ragaa El Sheikh ◽  
Abd Ellateif ◽  
Shymaa M. Fawzi ◽  
...  
Keyword(s):  
Spectrophotometric Determination ◽  
Dosage Forms

Spectrophotometric Determination of Piroxicam via Chelation with Fe(III) in Commercial Dosage Forms

2009 ◽  
Vol 56 (6) ◽  
pp. 1083-1091 ◽  
Author(s):  
Syed Najmul Hejaz Azmi ◽  
Bashir Iqbal ◽  
Muna Ahmed Mohad Jaboob ◽  
Warda Ali Said Al Shahari ◽  
Nafisur Rahman
Keyword(s):  
Spectrophotometric Determination ◽  
Dosage Forms
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