| 293293 | Heterocyclic compounds with oxygen hetero -atom(s) only.-Piperonal |
| 293294 | Heterocyclic compounds with oxygen hetero -atom(s) only.-Safrole |
| 293295 | Heterocyclic compounds with oxygen hetero -atom(s) only.-Tetrahydrocannabinols (all isomers) |
| 293299 | Heterocyclic compounds with oxygen hetero -atom(s) only.-Other |
| 293311 | Heterocyclic compounds with nitrogen hetero-atom(s) only.-Phenazone (antipyrin) and its derivatives |
| 293319 | Heterocyclic compounds with nitrogen hetero-atom(s) only.-Other |
| 293321 | Heterocyclic compounds with nitrogen hetero-atom(s) only.-Hydantoin and its derivatives |
| 293329 | Heterocyclic compounds with nitrogen hetero-atom(s) only.-Other |
| 293331 | Heterocyclic compounds with nitrogen hetero-atom(s) only.-Pyridine and its salts |
| 293332 | Heterocyclic compounds with nitrogen hetero-atom(s) only.-Piperidine and its salts |
| 293333 | Heterocyclic compounds with nitrogen hetero-atom(s) only.-Alfentanil (INN), anileridine (INN), bezitramide (INN), bromazepam (INN), difenoxin (INN), diphenoxylate (INN), dipipanone (INN), fentanyl (INN), ketobemidone (INN), methylphenidate (INN), pentazocine (INN), pethidine (INN), pethidine (INN) intermediate A, phencyclidine (INN) (PCP), phenoperidine (INN), pipradrol (INN), piritramide (INN), propiram (INN) and trimeperidine (INN); salts thereof |
| 293339 | Heterocyclic compounds with nitrogen hetero-atom(s) only.-Other |
| 293341 | Heterocyclic compounds with nitrogen hetero-atom(s) only.-Levorphanol (INN) and its salts |
| 293349 | Heterocyclic compounds with nitrogen hetero-atom(s) only.-Other |
| 293352 | Heterocyclic compounds with nitrogen hetero-atom(s) only.-Malonylurea (barbituric acid) and its salts |
