1. Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry, Halle (Saale), Germany
2. Department of Biological Sciences and Chemistry, College of Arts and Sciences, University of Nizwa, Nizwa, Sultanate of Oman
3. Department of Chemistry and Polymer Science, University of Stellenbosch, Matieland, Stellenbosch, South Africa
4. Department of Chemistry, Karakoram International University, Gilgit, Gilgit-Baltistan, Pakistan