1. 1) Present address: Faculty of Life Science, Toyo University, 1–1–1 Izumino, Itakura-machi, Oura-gun, Gunma 374–0193, Japan.
2. 3) List of Narcotic Drugs Under International Control, prepared by the International Narcotics Control Board, Vienna International Centre, Austria, 2000.
3. 4) Kapoor L. D., “Opium Poppy: Botany, Chemistry, and Pharmacology,” ed. by Kapoor L. D., Food Product Press, New York, 1995.
4. Determination of morphine and related alkaloids in crude morphine, poppy straw and opium preparations by micellar electrokinetic capillary chromatography