1. Department of Chemistry, The University of Lahore, Lahore, Pakistan
2. Department of Biochemistry, The University of Lahore, Lahore, Pakistan
3. Department of Pharmaceutical Sciences, College of Pharmacy, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
4. Department of Chemistry, Division of Science and Technology, University of Education, Lahore, Pakistan