1. The manufacturer and practitioner are expressly authorized to engage in such activities by the Attorney General of the United States, or pursuant to the federal Food, Drug and Cosmetic Act;

2. The manufacturer or dispenser is registered under all appropriate provisions of this chapter;

3. Any Schedule I drug so manufactured is sold or furnished on an official written order to a practitioner or other authorized person only; and

4. The manufacturer and practitioner comply with all other requirements of this chapter.