1. Department of Pharmaceutical Chemistry, Kulliyyah of Pharmacy, International Islamic University Malaysia, Kuantan, Malaysia
2. Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Universitas Ahmad Dahlan, Yogyakarta, Indonesia
3. Ahmad Dahlan Halal Center Universitas Ahmad Dahlan, Yogyakarta, Indonesia
4. International Institute for Halal Research and Training, International Islamic University Malaysia, Gombak, Malaysia