Egyptian Journal of Chemistry

Author = mohamed A. Zayed

Laccase Immobilization on Magnetic Nanoparticles: Recent Techniques and Applications

Volume 68, Issue 11, November 2025, Pages 139-151

10.21608/ejchem.2025.340868.10913

Kholoud Ramadan Mohamed; fatma sedeek mohamed hassan; mohamed A. Zayed; Mahmoud F. Mubarak

HPLC Simultaneous Separation and Micro-determination of Cloperastine fendizoate, Methyl parahydroxybenzoic acid and Propyl parahydroxybenzoic acid in their Anti-cough Suspension Pharmaceutical Formulation

Volume 67, Issue 3, March 2024, Pages 31-41

10.21608/ejchem.2023.214658.8058

mohamed A. Zayed; Faten ahmed noureldien; mina g. morcos; Marwa Elbadry Mohammad

A New Approach for Micro-Determination of the Free Amino Acids in Presence of Albumin Present in Human Embryos’ Culture Medium Using Different Analytical Techniques

Volume 65, Issue 132, December 2022, Pages 1075-1086

10.21608/ejchem.2022.142385.6223

mohamed M taha; mohamed A. Zayed

Efficient comparative evaluation of spectrophotometrically determined phosphate in synthetic and in actual human embryos' culture medium

Volume 65, Issue 2, February 2022, Pages 113-121

10.21608/ejchem.2021.80863.4006

mohamed M taha; mohamed A. Zayed

Liquid Phase Sintering of Nano Silicon Carbide Prepared from Egyptian Rice Husk Ash waste

Volume 64, Issue 8, August 2021, Pages 4091-4097

10.21608/ejchem.2021.67887.3480

M. A. Zayed; Mahmoud F. Zawrah; Mustafa R. K. Ali

Preparation and Characterization of Novel Zinc Aluminate NanoPowders Doped with Copper (II), Loaded and Non-loaded with Carbon Spheres Using Co- Precipitation Method and Its Environmental Application

Volume 64, Issue 3, March 2021, Pages 1395-1409

10.21608/ejchem.2020.51062.3045

mohamed A. Zayed; Mohamed Rashad; Diaa Rayan; Shimaa M Aboueata

Structure Investigation of Synthesized Novel Retinoid-Iodine Derivatives and Its Biological Applications

Volume 64, Issue 1, January 2021, Pages 211-224

10.21608/ejchem.2020.33717.2706

mohamed A. Zayed; Marwa H Abdel Basset

Novel p-nitrophenyl Maleanilic Acid and Its Organometallic Chelates of Cr, Mo and W Carbonyls Structure Evaluation Using Different Techniques and Chromium Chelate Cytotoxicity

Volume 63, Issue 11, November 2020, Pages 4327-4340

10.21608/ejchem.2020.24342.2446

mohamed A. Zayed; Khloud.R. Oraby; Fatma.S.M. Hassan

Isolation, identification, thermal analysis, DFT calculations and antioxidant activity studies of lichen metabolites norstictic acid and evernic acid Abstract

Volume 63, Issue 11, November 2020, Pages 4589-4605

10.21608/ejchem.2020.28473.2611

mohamed A. Zayed; Nedeljko T Manojlovic

Rose Bengal- Pioglitazone Drug Reaction Novel Products. Structures – Biological Activity and Cytotoxicity Relationship and Evaluation with Theoretical Calculations

Volume 63, Issue 6, June 2020, Pages 2133-2156

10.21608/ejchem.2019.17807.2089

mohamed A. Zayed; Yassmin S Farag; mahmoud Nouman

Development of Carbon Paste Electrodes for the Selective Determination of Venlafaxine and Its Metabolite Desvenlafaxine in their Pure and Pharmaceutical Formulations

Volume 63, Issue 5, May 2020, Pages 1833-1848

10.21608/ejchem.2019.17417.2067

shimaa Mousa; Nahla Sayed Ismail; mohamed A. Zayed

Utilization of Cross-Linked Chitosan/ ACTF Biocomposite for Softening Hard Water: Optimization by Adsorption Modeling

Volume 62, Special Issue (Part 2) Innovation in Chemistry, December 2019, Pages 437-456

10.21608/ejchem.2019.12589.1780

Rasha Hosny; Mahmoud Fathy; O.H. Abdelraheem; mohamed A. Zayed

Structure Investigation of Solid Ion Pairs of Three Azole Drugs-rose Bengal Using Different Spectroscopic Techniques and their Biological Activities

Volume 62, Issue 11, November 2019, Pages 2143-2162

10.21608/ejchem.2019.11907.1750

Mohamed Zayed; Marwa A. Abdallah

Spectroscopic Investigation of Para-Methyl and Para-Methoxy Maleanilinic Acids in Comparison with Thermal Analyses and Theoretical Calculations and Evaluation of Cytotoxicity Against Carcinoma Cells

Volume 62, Issue 8, August 2019, Pages 1519-1536

10.21608/ejchem.2019.7353.1597

mohamed A. Zayed; Mohamed El-Desawy; AZZA Eladly

The Use of Two Novel Maleanilinic Acid Indicators in Ground Water Analyses Applying UV-Vis Spectra and Atomic Spectrometry and Biological Studies of These Derivatives

Volume 62, Issue 1, January 2019, Pages 157-170

10.21608/ejchem.2018.4387.1391

mohamed A. Zayed; Azza Awad Eladly

Spectrophotometric Microdetermination of Tretinoin, Isotretinoinusing Iodine and Tazarotene Microdetermination Via Reaction with Rose-Bengal Reagent

Volume 61, Issue 1, January and February 2018, Pages 143-153

10.21608/ejchem.2017.1741.1147

Mohamed Zayed; Marwa H Abdel Basset

The Use of Diphenylamine Sulfonate Redox Indicator in Spectrophotometric Micro-determination of Non-Steroidal Anti-Inflammatory Drugs.

Volume 60, Issue 6, December 2017, Pages 1135-1149

10.21608/ejchem.2017.1560.1120

Mohamed Zayed; Mahmoud Farouk

Spectrophotometric Determination of Fluconazole, Voriconazole and Butoconazole nitrate by Ion-Pair Formation with Rose Bengal Reagent.

Volume 60, Issue 6, December 2017, Pages 1177-1188

10.21608/ejchem.2017.1299.1075

mohamed A. Zayed; Manal A. El-Shal; Marawa Abdel Azime

Journal Archive

Volume 69 (2026)

Volume 68 (2025)

Volume 67 (2024)

Volume 66 (2023)

Volume 65 (2022)

Volume 64 (2021)

Volume 63 (2020)

Volume 62 (2019)

Volume 61 (2018)

Volume 60 (2017)

Volume 59 (2016)

Volume 58 (2015)

Volume 57 (2014)

Volume 56 (2013)

Volume 55 (2012)

Volume 54 (2011)

Volume 53 (2010)