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2014
Lotfy, H. M., E. M. Abdel-Moety, and E. G. Nouman, "Selective liquid chromatographic quantification of betamethasone valerate and clioquinol in presence of potential interferents", International Journal of Pharmacy and Pharmaceutical Sciences, vol. vol 6, issue Issue 7, pp. 79-85, 2014.
M.Lotfy, H., S. M.Tawakkol, N. M.Fahmy, and M. A.Shehata, "Stability Indicating Chromatographic methods for the Determination of Pharmaceutical Dosage Forms Containing Calcium dobesilate in the presence of its interfering substances", International Journal of Pharmacy and Pharmaceutical Sciences, vol. Vol 6, issue Issue 11, pp. 123-130, 2014. hplc.pdf
M.Tawakol, S., N. M.Fahmy, H. M.Lotfy, and M. A.Shehata, "STABILITY INDICATING CHROMATOGRAPHIC METHODS FOR THE DETERMINATION OF PHARMACEUTICAL DOSAGE FORMS CONTAINING CALCIUM DOBESILATE IN THE PRESENCE OF ITS INTERFERING SUBSTANCES", International Journal of Pharmacy and Pharmaceutical Sciences, vol. 6, issue 11, pp. 123-130, 2014.
M.Lotfy, H., E. M.Abdel-Moety, and E. G.Nouman, "Stability Indicating HPLC-Determination Of Biperiden Hydrochloride In Presence Of Its Oxidative And Acid Degradation Products ", Journal of analytical chemistry, an indian journal, vol. Volume 14, issue Issue 3, 2014.
M.Lotfy, H., S. M.Tawakkol, N. M.Fahmy, and M. A.Shehata, "Successive Spectrophotometric Resolution as a Novel Technique for the Analysis of Ternary Mixtures of Pharmaceuticals", Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, vol. 121, pp. 313–323, 2014.
2013
Lotfy, H. M., N. Y. Hassan, S. M. Elgizawy, and S. S. Saleh, "Comparative study of new spectrophotometric methods; an application on pharmaceutical binary mixture of ciprofloxacin hydrochloride and hydrocortisone", Journal of The Chilean Chemical Society, vol. 58, issue 3, pp. 1651-1657, 2013.
Hassan, N. Y., S. M. Elgizawy, H. M. Lotfy, and S. S. Saleh, "A Comparative Study of Spectrophotometric Methods Versus Chemometric Methods; An Application on a Pharmaceutical Binary Mixture of Ofloxacin and Dexamethasone", International Research Journal of Pure & Applied Chemistry, vol. 3, issue (2), pp. 90-110, 2013.
Saleh, S. S., H. M. Lotfy, N. Y. Hassan, and S. M. Elgizawy, "A comparative study of validated spectrophotometric and TLC- spectrodensitometric methods for the determination of sodium cromoglicate and fluorometholone in ophthalmic Solution", Saudi Pharmaceutical Journal , vol. 21, pp. 411-421, 2013.
Lotfy, H. M., A. M. Michael, M. R. Rezk, and M. A. Shehata, "Determination of Sumatriptan and Zolmitriptan in Presence of Their Corresponding Degradation Products by HPTLC Methods", Chromatographia, vol. 76, issue (3-4) , , pp. 187-194, 2013.
Hayam Mahmoud Lotfy, M. A. Hegazy, and Sherif Abdel Naby Abdel-Gawad, "Simultaneous determination of Simvastatin and Sitagliptin in tablets by new univariate spectrophotometric and multivariate factor based methods", European Journal of Chemistry, vol. 4, issue (4), pp. 414 - 421, 2013.
Lotfy, H. M., and M. A. Hegazy, "Simultaneous determination of some cholesterol-lowering drugs in their binary mixture by novel spectrophotometric methods", Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy , vol. 113 , pp. 107–114, 2013.
Elgizawy, S. M., N. Y. Hassan, H. M. Lotfy, and S. S. Saleh, "Spectrophotometric and Chromatographic Methods for the Determination of a Binary Mixture of Sodium Cromoglicate and Xylometazoline Hydrochloride", Analytical Chemistry , An Indian Journal, vol. 13, issue (4) , pp. [152-160], 2013.
Lotfy, H. M., S. S. Saleh, N. Y. Hassan, and S. M. Elgizawy, "Univariate versus Multivariate Spectrophotometric Methods for Simultaneous Determination of Complex Binary Mixtures with Overlapped Spectra: A Comparative Study ", Analytical Chemistry Letters, vol. 3, issue (2), pp. 70-84, 2013.
Michael, A. M., M. Shehata, A. el kadi, H. M. Lotfy, and M. Rezk, "A Validated Stability - Indicating Method for the Determination of Sumatriptan and Kinetic Study of the Degradation", Analytical Chemistry , An Indian Journal , vol. 12, issue (4), pp. 127-132, 2013.
M.Lotfy, H., S. M.Tawakkol, N. M.Fahmy, and M. A.Shehata, "Validated Stability Indicating Spectrophotometric Methods for theDetermination of Lidocaine Hydrochloride, Calcium Dobesilate, and Dexamethasone Acetate in their Dosage Forms", Analytical Chemistry Letters, vol. 3, issue (3), pp. 208-225, 2013.
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