HAMID, KHURIAH ABDUL, Department of Pharmaceutics, Faculty of Pharmacy, Universiti Teknologi MARA Cawangan Selangor 42300, Puncak Alam Campus, Selangor, Malaysia. Atta-ur-Rahman Institute for Natural Product Discovery, Universiti Teknologi MARA Cawangan Selangor 42300, Puncak Alam Campus, Selangor, Malaysia, Malaysia