1. Faculty of Science, Department of Chemical Science, Universiti Tunku Abdul Rahman, Kampar, Malaysia
2. School of Chemical Sciences, Universiti Sains Malaysia, Pulau Penang, Malaysia
3. X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, Pulau Penang, Malaysia
4. Eman Testing and Research Laboratory, School of Pharmaceutical Sciences, Universiti Sains Malaysia, Pulau Penang, Malaysia