| Harmonized Tariff Schedule | ||
|---|---|---|
| Statistical code | Description | |
| H.S. code | Domestic code | |
| 2711.13 | Butanes | |
| 2903.39 | 54 | -- 1,1,1,3,3-Pentafluorobutane (HFC-365mfc) |
| 2903.89 | 091 | -- Perfluorocyclobutane (PFC-c318) |
| 2926.30 | 000 | Fenproporex (INN) and its salts; methadone (INN) intermediate (4-cyano-2-dimethylamino-4,4-diphenylbutane) |