Saad, A. S., M. E. Draz, I. A. Naguib, H. E. Zaazaa, A. S. Lashien, and F. F. Abdallah, "Impurity‐profiling UPLC methods for quantitative analysis of some antiemetics formulated with pyridoxine", Biomedical Chromatography, vol. 36, issue 6, pp. e5353, 2022.
Rahman, M. A. A., A. S. Saad, S. S. El-Mosallamy, M. R. Elghobashy, H. E. Zaazaa, and S. A. Atty, "Economical Voltammetric Sensor for Sensitive Rapid Determination of Ondansetron in the Presence of Opioid Antagonist Naltrexone", Electrocatalysis, 2022.
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.
Soliman, S. S., A. E. El-Haddad, G. A. Sedik, M. R. Elghobashy, H. E. Zaazaa, and A. S. Saad, "Experimentally designed chemometric models for the assay of toxic adulterants in turmeric powder", RSC advances, vol. 12, issue 15, pp. 9087-9094, 2022.
Heragy, M. O., A. A. M. Moustafa, E. S. ElZanfaly, and A. S. Saad, "A portable solid-state potentiometric sensor based on a polymeric ion-exchanger for the assay of a controversial food colorant (sunset yellow)", Analytical Methods, vol. 13, issue 41, pp. 4896-4903, 2021.
Soliman, M., A. S. Saad, N. S. Ismail, and H. E. - S. Zaazaa, "A validated RP-HPLC method for determination of nitroxinil and investigation of its intrinsic stability", Journal of the Iranian Chemical Society, vol. 18, issue 2, pp. 351 - 361, 2021. AbstractWebsite

A fast, sensitive and selective RP-HPLC method was developed for extensive investigation of nitroxinil’s stability. The stability of the studied drug was tested under different stress conditions, namely hydrolytic, oxidative, photolytic and thermal. Separation of nitroxinil and its degradation products was achieved in less than 5 min using Venusil XBP C18 (150 × 2.1 mm id, 5 um particle size) column and isocratic mobile phase composed of 0.1% triethylamine pH 2.5 (adjusted with phosphoric acid) and acetonitrile mixture in a ratio of (70:30; v/v). UV detection at 270 nm was employed for monitoring nitroxinil degradation behavior over a linearity range of 1–75 µg/mL. Plackett–Burman experimental design was adopted for robustness testing of the developed chromatographic method. LC-mass identification of nitroxinil’s hydrolytic and oxidative degradations was attempted, and the suggested mechanism was deduced. The proposed method was successfully applied in determination of the drug in raw material and pharmaceutical dosage form.

Draz, M. E., I. A. Naguib, and A. S. Saad, "Computational ionophore selection during optimization of a portable calixarene based sensor for direct assay of levamisole residues in livestock products", Journal of Electroanalytical Chemistry, vol. 897, pp. 115546 - 115546, 2021/09//. AbstractWebsite
Edrees, F. H., A. S. Saad, M. T. Alsaadi, N. H. Amin, and N. S. Abdelwahab, "Experimentally designed chromatographic method for the simultaneous analysis of dimenhydrinate, cinnarizine and their toxic impurities", RSC Advances, vol. 11, issue 3, pp. 1450 - 1460, 2021///. AbstractWebsite

Experimentally designed HPLC method for simultaneous analysis of dimenhydrinate, cinnarizine and their toxic impurities.