Analysis
HTS 2933.99.58 covers droperidol; and Imipramine hydrochloride under heading 2933 (heterocyclic compounds with nitrogen hetero-atom(s) only).
Neighbouring lines carry rates from duty-free to 6.5%, so the exact line matters. The widest gap is with 2933.99.97 (other: other), at 6.5%: a product that belongs there but is entered here, or the reverse, changes the duty by 6.5 percentage points.
Goods classified here enter the United States duty-free at the general (normal trade relations) rate, as do about 26% of the 1050 tariff lines in chapter 29. Free here means free of the base duty only: origin-specific Chapter 99 duties such as Section 301 can still be owed.
Census statistics map these goods to NAICS 325412 (Pharmaceutical Preparation Manufacturing), an industry of 1,436 US establishments employing 170,029 people. That is the industry code a US manufacturer of the same product would normally use.
Every edition we compared, from Jan 2023 to Oct 2026 (Rev. 22), shows the same general rate of Free.
Neighbouring lines
| Line | Description | General rate |
|---|---|---|
| 2933.99.01 | Butyl (R)-2-[4-(5-trifluoromethyl-2- pyridinyloxy)phenoxy]propanoate | Free |
| 2933.99.02 | 2-[4-[(6-Chloro-2-quinoxalinyl)oxy]phenoxy]- propionic acid, ethyl ester | Free |
| 2933.99.05 | Acridine and indole | Free |
| 2933.99.06 | α-Butyl-α-(4-chlorophenyl)-1H-1,2,4- triazole-1- propanenitrile (Myclobutanil); andα-[2-(4-Chlorophenyl)ethyl]-α-phenyl-1H- 1,2,4-triazole-1-propanenitrile (Fenbuconazole) | 6.5% |
| 2933.99.08 | Aceto acetyl-5-amino benz imidazolone; 3-(2H-Benzo triazol-2-yl)-5-(tert-butyl)-4- hydroxy benzene propanoic acid, C7-C9 branched or linear alkyl esters; 2-(2H-Benzotriazol-2-yl)-6-dodecyl-4- methyl phenol, in liquid form, branched and linear; and 1,3,3-Trimethyl-2-methyleneindoline | Free |
| 2933.99.11 | Aromatic or modified aromatic: carbazole | Free |
| 2933.99.12 | 6-Bromo-5-methyl-1H-imidazo[4,5-b]- pyridine; 2-sec-Butyl-4-tert-butyl-6-(benzotriazol-2- yl)phenol; 2-tert-Butyl-4-methyl-6-(5-chlorobenzotri- azol-2-yl)phenol; 2,4-Di-tert-butyl-6-(benzotriazol-2-yl)phenol; 2,4-Di-tert-butyl-6-(5-chlorobenzotriazol-2- yl)phenol; 2,3-Dichloro-6-quinoxalinecarbonyl chloride; 1-Hydroxy-2-carbazolecarboxylic acid; 2-Hydroxy-3-carbazolecarboxylic acid; 2-Hydroxy-3-carbazolecarboxylic acid, sodium salt; Iminodibenzyl(10,11-dihydro-5H-dibenz- [b,f]azepine); Indoline; 3-Methylbenzo[f]quinoline; 2-Methylindoline; 2-Methylmercaptobenzimidazole; 1-Methyl-2-phenylindole; 1-Methylpyrazine; 2,4-Methylpyrazolic acid; 2-Phenylbenzimidazole; 2-Phenylindole; Tetramethylpyrazine; 2,3,5-Triphenyltetrazolium chloride;dl-Tryptophan; and Vinylcarbazole, monomer | 5.8% |
| 2933.99.14 | 5-Amino-4-chloro-α-phenyl-3- pyridazinone | 6.5% |
| 2933.99.16 | o-Diquat dibromide (1,1'-Ethylene- 2,2'-dipyridylium dibromide) | Free |
| 2933.99.17 | Other: insecticides | 6.5% |
| 2933.99.22 | Other: other | 6.5% |
| 2933.99.24 | Photographic chemicals | 6.5% |
| 2933.99.26 | Drugs: antihistamines | 6.5% |
| 2933.99.42 | Acriflavine; Acriflavine hydrochloride; Carbadox; and Pyrazinamide | Free |
| 2933.99.46 | Anti-infective agents: other | 6.5% |
| 2933.99.51 | Hydralazine hydrochloride | Free |
| 2933.99.53 | Cardiovascular drugs: other | 6.5% |
| 2933.99.55 | Analgesics, antipyretics and nonhormonal anti-inflammatory agents | 6.5% |
| 2933.99.61 | Antidepressants, tranquilizers and other psychotherapeutic agents: other | 6.5% |
| 2933.99.65 | Anticonvulsants, hypnotics and sedatives | 6.5% |
| 2933.99.70 | Drugs primarily affecting the central nervous system: other | 6.5% |
| 2933.99.75 | Drugs: other | 6.5% |
| 2933.99.79 | Products described in additional U.S. note 3 to section VI | 6.5% |
| 2933.99.82 | Other: other | 6.5% |
| 2933.99.85 | 3-Amino-1,2,4-triazole | 3.7% |
| 2933.99.89 | Hexamethyleneimine | Free |
| 2933.99.90 | Other: drugs | 3.7% |
| 2933.99.97 | Other: other | 6.5% |