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Saad, A. S., M. E. Draz, I. A. Naguib, H. E. Zaazaa, A. S. Lashien, and F. F. Abdallah, "Adoption of Advanced Chemometric Methods for Determination of Pyridoxine HCl, Cyclizine HCl, and Meclizine HCl in the Presence of Related Impurities: A Comparative Study", Journal of AOAC INTERNATIONAL, vol. 105, issue (2), pp. 630-640, 2022.
Hussein, O. G., E. S. Elzanfaly, H. E. Zaazaa, M. A. Kawy, and S. A. Atty, "Analytical Eco-Scale for Evaluating the Greenness of Advanced Voltammetric Method Used for the Simultaneous Analysis of Combined Urinary Tract Infection Drugs in Different Matrices", Journal of The Electrochemical Society, , vol. 169, pp. 043507, 2022.
Houssini, O. E. M., M. A. K. El-Rahman, D. K. Fahem, and H. E. Zaazaa, "Application of ICH Guidelines for Studying the Degradation Behavior of Rocuronium Bromide Coupled with Stability-Indicating RP-LC Method", Journal of Chromatographic Science, vol. 60, issue 3, pp. 217-22, 2022.
Abbas, S. S., H. E. Zaazaa, M. R. El-Ghobashy, Y. M. Fayez, and S. A. Fattah, "Application of Membrane-Selective Electrodes for the Determination of Naftidrofuryl Oxalate in the Presence of Its Alkaline Degradant in Tablets and Plasma", Portugaliae Electrochimica Acta , vol. 30, issue 3, pp. 177-188, 2012.
Zaazaa, H. E., E. S. Elzanfaly, A. T. Soudi, and M. Y. Salem, "Application of the ratio difference spectrophotometry to the determination of ibuprofen and famotidine in their combined dosage form; Comparison with previously published spectrophotometric methods", Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy , vol. 143, pp. 251–255, 2015.
Emara, S., M. Kamal, G. Hadad, H. ZaaZaa, and M. A. Kawi, "BACK-FLUSH COLUMN-SWITCHING TECHNIQUE FOR ON-LINE SAMPLE CLEANUP AND ENRICHMENT TO DETERMINE GUAIPHENESIN IN HUMAN SERUM", Journal of Liquid Chromatography & Related Technologies, vol. 35, pp. 15-27, 2012.
ZaaZaa, H. A., M. M. Abdelrahman, I. A. Naguib, and M. A. Elsayed, "Chromatographic Methods for Quantitative Determination of Ampicillin, Dicloxacillin and Their Impurity 6-Aminopenicillanic Acid.", Journal of chromatographic science, vol. 56, issue 3, pp. 209-215, 2018.
Alamein, A. M. A. A., A. S. Saad, M. M. Galal, and H. E. Zaazaa, "A Comparative Study of Different Chromatographic Techniques for Determination of Toxic Impurities of Some Commonly Used Anesthetics", Journal of Planar Chromatography , vol. 31, issue 4, pp. 280-289, 2018.
Zaazaa, H. E., S. S. Abbas, H. A. M. Essam, and M. G. El-Bardicy, "Comparative Study of Different Plasticized Membrane Electrodes for the Stability-indicative Determination of Torsemide", Portugaliae Electrochimica Acta , vol. 30, issue 5, pp. 335-350, 2012.
El-Rahman, M. A. K., H. E. Zaazaa, S. S. Abbas, B. El-Zean, Z. A. EL-Sherif, and D. A. El-Haddad, "A comparative study of liquid and solid inner contact roxatidine acetate ion-selective electrode membranes ", Chinese Chemical Letters , vol. 26, pp. 714–720, 2015.
Lotfy, H. M., S. M. Amer, H. E.Zaazaa, and N. S. Mostaf, "A comparative study of the novel spectrophotometric methods versus conventional ones for the simultaneous determination of Esomeprazole magnesium trihydrate and Naproxen in their binary mixture", Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy , vol. 151, pp. 538–546 , 2015.
Hegazy, M. A., S. S. Abbas, H. E. Zaazaa, and H. A. M. Essam, "Conventional univariate versus multivariate spectrophotometric assisted techniques for simultaneous determination of perindopril arginin and amlodipine besylate in presence of their degradation products", Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy , vol. 150, pp. 940–948, 2015.
Abd-ElSalam, H. - A. H., M. Al-Shorbagy, M. A. Al-Ghobashy, N. Nassar, H. E. Zaazaa, and M. A. Ibrahim, "Correlation of In Vivo and In Vitro Assay Results for Assessment of Free Radical Scavenging Activity of Green Tea Nutraceuticals",  Journal of Food Science , vol. 81, issue 7, pp. 1707-1715, 2016.
and Mohamed Abdelkawy, Sawsan M.Amer, H. L. H. Z. M. E., "Determination of atenolol, chlorothalidone and amiloride in combinations", Bull.Fac.Pharm.Cairo Univ., vol. 43, issue 2, pp. 51-63, 2005.
Naguib, I. A., E. A. Abdelaleem, H. E. Zaazaa, and E. A. Hussein, "Determination of Cefoperazone Sodium in Presence of Related Impurities by Linear Support Vector Regression and Partial Least Squares Chemometric Models", Journal of Analytical Methods in Chemistry, vol. 2015, Article ID 593892, 2015.
E.Zaazaa, H., S. S. Abbas, M. Abdelkawy, and M. M. Abdelrahman, "Determination of dropropizine in presence of oxidative degradate by four different techniques", Bull.Fac.Pharm.Cairo Univ., vol. 46, issue 1, pp. 191-204, 2008.
Boltia, S. A., A. T. Soudi, E. S. Elzanfaly, and H. E. Zaazaa, "Development and Greenness Evaluation of a Potentiometric Method for Lomefloxacin Hydrochloride Determination in Urine and Establishment of Cumulative Excretion Pattern", Journal of The Electrochemical Society, vol. 166 (2), 2019.
Abdelaleem, E. A., I. A. Naguib, H. E. Zaazaa, and E. A. Hussein, "Development and Validation of HPLC and HPTLC Methods for Determination of Cefoperazone and Its Related Impurities", J. of pharmaceutical science, vol. 54, issue 2, pp. 179-86 , 2016.
Naguib, I. A., E. A. Abdelaleem, M. E. Draz, and H. E. Zaazaa, "Development and Validation of RP-HPLC Method for Determination of Hydrochlorothiazide, Amiloride Hydrochloride and Related Impurities in Bulk and Pharmaceutical Dosage Forms", Analytical Chemistry Letters , vol. 5, issue 2, pp. 85 – 93, 2015.
Naguib, I. A., E. A. Abdelaleem, H. E. Zaazaa, and E. A. E. W. Hussein, "Development and validation of stability indicating spectrophotometric and HPTLC methods for determination of acemetacin", European Journal of Chemistry , vol. 5, issue 2, pp. 219-226, 2014.
a, Y. F. B., E. S. ElZanfaly, H. M. Essam, and H. E. - S. Zaazaa, "Development and validation of stability indicating TLC densitometric and spectrophotometric methods for determination of Clobetasol propionate", Bulletin of Faculty of Pharmacy, Cairo University, vol. 54, issue 2, pp. 165–174, 2016.