Simultaneous determination of phenazopyridine HCl and trimethoprim in presence of phenazopyridine HCl impurity by univariate and multivariate spectrophotometric methods - Quantification of phenazopyridine HCl impurity by univariate methods

Citation:
Soudi, A. T., O. G. Hussein, E. S. Elzanfaly, H. E. Zaazaa, and M. A. Kawy, "Simultaneous determination of phenazopyridine HCl and trimethoprim in presence of phenazopyridine HCl impurity by univariate and multivariate spectrophotometric methods - Quantification of phenazopyridine HCl impurity by univariate methods", Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, vol. 239, pp. 1-8, 2020.
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