(c) Opium derivatives. Unless specifically excepted or unless listed in another schedule, any of the following opium derivatives, its salts, isomers, and salts of isomers whenever the existence of such salts, isomers, and salts of isomers is possible within the specific chemical designation:

1. Acetorphine
2. Acetyldihydrocodeine
3. Benzylmorphine
4. Codeine methylbromide
5. Codeine-N-Oxide
6. Cyprenorphine
7. Desomorphine
8. Dihydromorphine
9. Drotebanol
10. Etorphine (except hydrochloride salt)
11. Heroin
12. Hydromorphinol
13. Methyldesorphine
14. Methyldihydromorphine
15. Morphine methylbromide
16. Morphine methylsulfonate
17. Morphine-N-Oxide
18. Myrophine
19. Nicocodeine
20. Nicomorphine
21. Normorphine
22. Pholcodine
23. Thebacon