Extraction-radiochemical study of the ion-association complex of antimony (V) with tetrazolium violet and its thermal behavior

1995 ◽  
Vol 200 (5) ◽  
pp. 427-434 ◽  
Author(s):  
S. G. Kostova ◽  
B. S. Boyanov
1970 ◽  
Vol 19 (3) ◽  
pp. 412-414
Author(s):  
Tsunenobu SHIGEMATSU ◽  
Masakazu MATSUI ◽  
Toru AOKI ◽  
Masahiko ITO

2005 ◽  
Vol 2 (3) ◽  
pp. 199-202 ◽  
Author(s):  
L. D. Srinivas ◽  
P. Ravi Kumar ◽  
B. S. Sastry

Two simple and sensitive Visible spectrophotometric methods (A and B) for the determination of Fexofenadine (FEX) in bulk sample and pharmaceutical formulations are described. Methods A and B are based on the formation of ion-association complex involving carboxylic acid group of FEX and the basic dyes, Safranin-O (SFN-O, method A), methylene blue (MB, method B). The results obtained in the above two methods are reproducible and are statistically validated and found to be suitable for the assay of Fexofenadine in bulk and its pharmaceutical formulations.


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