1. Department of Chemistry, Faculty of Science and Technology, Universitas Airlangga, Komplek Kampus C UNAIR, Jl. Mulyorejo, Surabaya, Indonesia
2. Department of Chemistry, Taunggyi University, Taunggyi, Myanmar
3. Department of Chemistry, Mandalay University, Mandalay, Myanmar
4. Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku, Nagoya, 468-8503, Japan