| 2924.21 | | Cyclic amides (including cyclic carbamates) and their derivatives; salts thereof: | | | | |
| 2924.21 | | Ureines and their derivatives; salts thereof: | | | | |
| 2925.11.00 | 00 | Imides and their derivatives; salts thereof: | | | | |
| 2925.21.00 | 00 | Imines and their derivatives; salts thereof: | | | | |
| 2930 | | X. ORGANO-INORGANIC COMPOUNDS, HETEROCYCLIC COMPOUNDS, NUCLEIC ACIDS AND THEIR SALTS, AND SULFONAMIDES | | | | |
| 2930.90.91 | 23 | N,N-Dialkyl (methyl, ethyl, n-propyl or isopropyl)aminoethane-2-thiols and their protonated salts | kg | | | |
| 2933.33.00 | 00 | 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 | kg | Free | | 15.4¢/kg + 149.5% |
| 2934 | | Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds: | | | | |
| 2936.21.00 | 00 | Vitamins and their derivatives, unmixed: | | | | |
| 2936.21.00 | 00 | Vitamins A and their derivatives | kg | Free | | 25% |
| 2936.29 | | Other vitamins and their derivatives: | | | | |
| 2936.29.50 | 20 | Vitamins D and their derivatives | kg | | | |
| 2937.11.00 | 00 | Polypeptide hormones, protein hormones and glycoprotein hormones, their derivatives and structural analogues: | | | | |
| 2937.21.00 | | Steroidal hormones, their derivatives and structural analogues: | | | | |
| 2937.23.10 | | Obtained directly or indirectly from animal or vegetable materials | | Free | | 25% |
| 2937.31.00 | 00 | Catecholamine hormones, their derivatives and structural analogues: | | | | |
| 2937.50.00 | 00 | Prostaglandins, thromboxanes and leukotrienes, their derivatives and structural analogues | g | Free | | 25% |
| 2938 | | XII. GLYCOSIDES AND VEGETABLE ALKALOIDS, NATURAL OR REPRODUCED BY SYNTHESIS, AND THEIR SALTS, ETHERS, ESTERS AND OTHER DERIVATIVES | | | | |
| 2938 | | Glycosides, natural or reproduced by synthesis, and their salts, ethers, esters and other derivatives: | | | | |
| 2939 | | Vegetable alkaloids, natural or reproduced by synthesis, and their salts, ethers, esters and other derivatives: | | | | |
| 2939.11.00 | 00 | Alkaloids of opium and their derivatives; salts thereof: | | | | |
| 2939.20.00 | | Alkaloids of cinchona and their derivatives; salts thereof | | Free | | Free |
| 2939.41.00 | 00 | Ephedrines and their salts: | | | | |
| 2939.51.00 | 00 | Theophylline and aminophylline (theophylline- ethylenediamine) and their derivatives; salts thereof: | | | | |
| 2939.61.00 | 00 | Alkaloids of rye ergot and their derivatives; salts thereof: | | | | |
Harmonized Tariff Schedule of the United States inquiry: 3920590000
