HTS 2933: Heterocyclic compounds with nitrogen hetero-atom(s) only
Heading 2933 of the Harmonized Tariff Schedule of the United States has 128 ten-digit statistical numbers. A US entry line in ACE needs the full ten digits, with the quantity in kg.
Check additional duties before you file
- If the goods are made in China, check Section 301 duties under HTSUS heading 9903.88, on top of the general rate, and any exclusions.
| HTSUS number | Description | Unit | General rate |
|---|---|---|---|
| Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure: | |||
| 2933.11.00.00 | Phenazone (Antipyrine) and its derivatives | kg | 6.5% |
| 2933.19 | Other: | ||
| Aromatic or modified aromatic: | |||
| 2933.19.04.00 | Aminomethylphenylpyrazole (Phenylmethylaminopyrazole); and 3-Methyl-1-(p-tolyl)-2-pyrazolin-5-one (p-Tolyl methyl pyrazolone) | kg | Free |
| 2933.19.08.00 | 3-(5-Amino-3-methyl-1H-pyrazol-1-yl)- benzenesulfonic acid; Amino-J-pyrazolone; 3-Amino-1-(2,4,6-trichlorophenyl)-5- pyrazolone; 3-Carboxy-1,4-sulfophenylpyrazol-5-one; 4-Chloro-3-(3-methyl-5-oxo-2-pyrazolin-1- yl)benzenesulfonic acid; 1-(m-Chlorophenyl)-3-methyl-2-pyrazolin- 5-one;p-Chloropyrazolone; 1-(2',5'-Dichlorophenyl)-3-methyl-2- pyrazolin-5-one; 1-(o-Ethylphenyl)-3-methyl-2-pyrazolin- 5-one; 5-Imino-3-methyl-1-phenylpyrazole; 5-Imino-3-methyl-1-(m-sulfophenyl)- pyrazole; 2,4-Methylcarboxypyrazolic acid; Methylphenylpyrazolone; and Sulfinpyrazone | kg | 5.8% |
| 2933.19.15.00 | 1,2-Dimethyl-3,5-diphenyl-1H-pyrazolium methyl sulfate (Difenzoquat methyl sulfate) | kg | Free |
| 2933.19.18.00 | 2-Chloro-5-sulfophenylmethylpyrazolone; 2,5-Dichloro-4-(3-methyl-5-oxo-2- pyrazolin-1-yl) benzenesulfonic acid; Phenyl carbethoxypyrazolone;m-Sulfaminopyrazolone (m-Sulfamido- phenyl methyl pyrazolone); and 1-(p-Sulfophenyl)-3-methyl pyrazolone | kg | Free |
| Other: | |||
| 2933.19.23.00 | Pesticides | kg | 6.5% |
| 2933.19.30 | Photographic chemicals | 6.5% | |
| 2933.19.30.10 | Couplers, for use in color negative photographic paper | kg | |
| 2933.19.30.95 | Other | kg | |
| 2933.19.35.00 | Drugs | kg | 6.5% |
| Other: | |||
| 2933.19.37.00 | Products described in additional U.S. note 3 to section VI | kg | 6.5% |
| 2933.19.43.00 | Other | kg | 6.5% |
| Other: | |||
| 2933.19.45.00 | Drugs | kg | 3.7% |
| Other: | |||
| 2933.19.70.00 | 3-Methyl-5-pyrazolone | kg | Free |
| 2933.19.90.00 | Other | kg | 6.5% |
| Compounds containing an unfused imidazole ring (whether or not hydrogenated) in the structure: | |||
| 2933.21.00.00 | Hydantoin and its derivatives | kg | 6.5% |
| 2933.29 | Other: | ||
| Aromatic or modified aromatic: | |||
| 2933.29.05.00 | 1-[1-((4-Chloro-2-(trifluoromethyl)phenyl)- imino)-2-propoxyethyl]-1H-imidazole (Triflumizole); and Ethylene thiourea | kg | Free |
| 2933.29.10.00 | 2-Phenylimidazole | kg | 5.8% |
| Other: | |||
| 2933.29.20.00 | Drugs | kg | 6% |
| Other: | |||
| 2933.29.35.00 | Products described in additional U.S. note 3 to section VI | kg | 6.5% |
| 2933.29.43.00 | Other | kg | 6.5% |
| Other: | |||
| 2933.29.45.00 | Drugs | kg | 3.7% |
| Other: | |||
| 2933.29.60.00 | Imidazole | kg | Free |
| 2933.29.90.00 | Other | kg | 6.5% |
| Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure: | |||
| 2933.31.00.00 | Pyridine and its salts | kg | Free |
| 2933.32 | Piperidine and its salts: | ||
| 2933.32.10.00 | Piperidine | kg | 6.5% |
| 2933.32.50.00 | Other | kg | 6.5% |
| 2933.33.01.00 | Alfentanil (INN), anileridine (INN), bezitramide (INN), bromazepam (INN), carfentanil (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), remifentanil (INN) and trimeperidine (INN); salts thereof | kg | Free |
| 2933.34.00.00 | Other fentanyls and their derivatives | kg | 6.5% |
| 2933.35.00.00 | 3-Quinuclidinol | kg | 5.8% |
| 2933.36.00.00 | 4-Anilino-N-phenethylpiperidine (ANPP) | kg | 6.5% |
| 2933.37.00.00 | N-Phenethyl-4-piperidone (NPP) | kg | 6.5% |
| 2933.39 | Other: | ||
| 2933.39.08.00 | 1-(3-Sulfo propyl) pyridinium hydroxide;N,N'-Bis (2,2,6,6-tetra methyl-4-piperidinyl)-1,6- hexane diamine; 3,5-Dimethyl-2-hydroxy methyl-4-methoxy- pyridine (pyrmethyl alcohol); Dipenta methylene thiuram tetra sulfide; 2H-Indol-2-one,1,3-dihydro-1-phenyl-3-(4- pyridinyl methylene); 4-Picolyl chloride hydro chloride; and Piperidino ethyl chloride hydro chloride | kg | Free |
| 2933.39.10.00 | Collidines, lutidines and picolines | kg | Free |
| 2933.39.20.00 | p-Chloro-2-benzylpyridine; 4-Chloro-1-methylpiperidine hydrochloride; 1,4-Dimethyl-6-hydroxy-3-cyanopyrid-2-one; Di-(2,2,6,6-tetramethyl-4-hydroxy- piperidine)sebacate; 2-Methyl-5-ethylpyridine; 4-Phenylpropylpyridine; α-Phenylpyridylacetic acid, methyl ester; Picolinic acid; 2-Pyridinecarboxaldehyde; and 2,5-Pyridinedicarboxylic acid | kg | 5.8% |
| Other: | |||
| Pesticides | |||
| 2933.39.21.00 | Fungicides | kg | 6.5% |
| Herbicides: | |||
| 2933.39.23.00 | o-Paraquat dichloride | kg | 6.5% |
| 2933.39.25.00 | Other | kg | 6.5% |
| 2933.39.27.00 | Other | kg | 6.5% |
| Drugs: | |||
| 2933.39.31.00 | Antidepressants, tranquilizers and other psychotherapeutic agents | kg | 6.5% |
| 2933.39.41.00 | Other | kg | 6.5% |
| Other: | |||
| 2933.39.61 | Products described in additional U.S. note 3 to section VI | 6.5% | |
| 2933.39.61.10 | 3-Quinuclidinyl benzilate | kg | |
| 2933.39.61.20 | 1-[N,N-Dialkyl (≤C10)-N-(n-(hydroxyl, cyano, acetoxy)alkyl (≤C10)) ammonio]-n-n-[N-(3- dimethylcarbamoxy-α-picolinyl)-N,N-dialkyl (≤C10) ammonio]decane dibromide (n=1-8) | kg | |
| 2933.39.61.30 | 1,n-Bis[N-(3-dimethylcarbamoxy-α-picolyl)- N,N-dialkyl (≤ C10) ammonio]-alkane-(2,(n-1)- dione) dibromide (n=2-12) | kg | |
| Other: | |||
| 2933.39.61.40 | N-phenyl-4-piperidinamine (4-AP), tert-butyl 4-(phenylamino)piperidine-1-carboxylate (tert-butyl 4-anilinopiperidine-1-carboxylate, 1-boc-4-AP), norfentanyl (N-phenyl-N-(4-piperidyl)propionamide), piperidin-4-one (4-piperidone) and tert-butyl 4-oxopiperidine-1-carboxylate (1-boc-4-piperidone); salts thereof | kg | |
| 2933.39.61.92 | Other | kg | |
| 2933.39.92.00 | Other | kg | 6.5% |
| Compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused: | |||
| 2933.41.00.00 | Levorphanol (INN) and its salts | kg | Free |
| 2933.49 | Other: | ||
| 2933.49.08.00 | 4,7-Dichloroquinoline | kg | 6.5% |
| 2933.49.10.00 | Ethoxyquin (1,2-Dihydro-6-ethoxy-2,2,4- trimethylquinoline) | kg | 6.5% |
| 2933.49.15.00 | 8-Methylquinoline and Isoquinoline | kg | 5.8% |
| 2933.49.17.00 | Ethyl ethyl-6,7,8-trifluoro-1,4-dihydro-4-oxo-3- quinolinecarboxylate | kg | Free |
| Other: | |||
| Drugs: | |||
| 2933.49.20.00 | 5-Chloro-7-iodo-8-quinolinol (Iodo chlo rhydroxy quin); Deco quinate; Diiodo hydroxy quin; and Oxy quinoline sulfate | kg | 6.5% |
| 2933.49.26.00 | Other | kg | 6.5% |
| 2933.49.30.00 | Pesticides | kg | 6.5% |
| Other: | |||
| 2933.49.60.00 | Products described in additional U.S. note 3 to section VI | kg | 6.5% |
| 2933.49.70.00 | Other | kg | 6.5% |
| Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure: | |||
| 2933.52 | Malonylurea (Barbituric acid) and its salts: | ||
| 2933.52.10.00 | Malonylurea (barbituric acid) | kg | Free |
| 2933.52.90.00 | Other | kg | Free |
| 2933.53.00.00 | Allobarbital (INN), amobarbital (INN), barbital (INN), butalbital (INN), butobarbital, cyclobarbital (INN), methylphenobarbital (INN), pentobarbital (INN), phenobarbital (INN), secbutabarbital (INN), secobarbital (INN) and vinylbital (INN); salts thereof | kg | Free |
| 2933.54.00.00 | Other derivatives of malonylurea (barbituric acid); salts thereof | kg | 3.7% |
| 2933.55.00.00 | Loprazolam (INN), mecloqualone (INN), methaqualone (INN) and zipeprol (INN); salts thereof | kg | Free |
| 2933.59 | Other: | ||
| Pesticides: | |||
| Aromatic or modified aromatic | |||
| 2933.59.10.00 | Herbicides | kg | 6.5% |
| 2933.59.15.00 | Other | kg | 6.5% |
| 2933.59.18.00 | Other | kg | 6.5% |
| Drugs: | |||
| Aromatic or modified aromatic: | |||
| 2933.59.21.00 | Antihistamines, including those principally used as anti-nauseants | kg | 6.5% |
| Anti-infective agents: | |||
| 2933.59.22.00 | Nicarbazin; and Trimethoprim | kg | 6.5% |
| 2933.59.36.00 | Other | kg | 6.5% |
| 2933.59.46.00 | Antidepressants, tranquilizers and other psychotherapeutic agents | kg | 6.5% |
| 2933.59.53.00 | Other | kg | 6.5% |
| 2933.59.59.00 | Other | kg | 3.7% |
| Other: | |||
| Aromatic or modified aromatic: | |||
| 2933.59.70.00 | Products described in additional U.S. note 3 to section VI | kg | 6.5% |
| 2933.59.80.00 | Other | kg | 6.5% |
| Other: | |||
| 2933.59.85.00 | 2-Amino-4-chloro-6-methoxy pyrimidine; 2-Amino-4,6-di methoxy pyrimidine; and 6-Methyl uracil | kg | Free |
| 2933.59.95.00 | Other | kg | 6.5% |
| Compounds containing an unfused triazine ring (whether or not hydrogenated) in the structure: | |||
| 2933.61.00.00 | Melamine | kg | 3.5% |
| 2933.69 | Other: | ||
| 2933.69.20.00 | 2,4-Diamino-6-phenyl-1,3,5-triazine | kg | Free |
| 2933.69.50.00 | Hexamethylenetetramine | kg | 6.3% |
| 2933.69.60 | Other | 3.5% | |
| 2933.69.60.10 | Cyanuric chloride | kg | |
| Pesticides: | |||
| 2933.69.60.15 | Sodium dichloroisocyanurate and trichloroisocyanuric acid | kg | |
| 2933.69.60.21 | Other | kg | |
| 2933.69.60.30 | Products used principally for rubber processing | kg | |
| 2933.69.60.50 | Other | kg | |
| Lactams: | |||
| 2933.71.00.00 | 6-Hexanelactam (ε-Caprolactam) | kg | 6.5% |
| 2933.72.00.00 | Clobazam (INN) and methyprylon (INN) | kg | Free |
| 2933.79 | Other lactams: | ||
| Aromatic or modified aromatic: | |||
| 2933.79.04.00 | 2,5-Dihydro-3,6-diphenylpyrrolo-(3,4-c)- pyrrole-1,4-dione | kg | Free |
| Other: | |||
| 2933.79.08.00 | Products described in additional U.S. note 3 to section VI | kg | 6.5% |
| 2933.79.15.00 | Other | kg | 6.5% |
| Other: | |||
| 2933.79.20.00 | N-Methyl-2-pyrrolidone; and 2-Pyrrolidone | kg | 4.2% |
| 2933.79.30.00 | N-Vinyl-2-pyrrolidone, monomer | kg | 5.5% |
| 2933.79.40.00 | 12-Aminododecanoic acid lactam | kg | Free |
| 2933.79.85.00 | Other | kg | 6.5% |
| Other: | |||
| 2933.91.00 | Alprazolam (INN), camazepam (INN), chlordiazepoxide (INN), clonazepam (INN), clorazepate, delorazepam (INN), diazepam (INN), estazolam (INN), ethyl loflazepate (INN), fludiazepam (INN), flunitrazepam (INN), flurazepam (INN), halazepam (INN), lorazepam (INN), lormetazepam (INN), mazindol (INN), medazepam (INN), midazolam (INN), nimetazepam (INN), nitrazepam (INN), nordazepam (INN), oxazepam (INN), pinazepam (INN), prazepam (INN), pyrovalerone (INN), temazepam (INN), tetrazepam (INN) and triazolam (INN); salts thereof | Free | |
| 2933.91.00.10 | Lorazepam (INN); salts thereof | kg | |
| 2933.91.00.50 | Other | kg | |
| 2933.92.00.00 | Azinphos-methyl | kg | Free |
| 2933.99 | Other: | ||
| Aromatic or modified aromatic: | |||
| 2933.99.01.00 | Butyl (R)-2-[4-(5-trifluoromethyl-2- pyridinyloxy)phenoxy]propanoate | kg | Free |
| 2933.99.02.00 | 2-[4-[(6-Chloro-2-quinoxalinyl)oxy]phenoxy]- propionic acid, ethyl ester | kg | Free |
| 2933.99.05.00 | Acridine and indole | kg | Free |
| 2933.99.06.00 | 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) | kg | 6.5% |
| 2933.99.08.00 | 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 | kg | Free |
| 2933.99.11.00 | Carbazole | kg | Free |
| 2933.99.12.00 | 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 | kg | 5.8% |
| Other: | |||
| Pesticides: | |||
| 2933.99.14.00 | 5-Amino-4-chloro-α-phenyl-3- pyridazinone | kg | 6.5% |
| 2933.99.16.00 | o-Diquat dibromide (1,1'-Ethylene- 2,2'-dipyridylium dibromide) | kg | Free |
| Other: | |||
| 2933.99.17.01 | Insecticides | kg | 6.5% |
| 2933.99.22.00 | Other | kg | 6.5% |
| 2933.99.24.00 | Photographic chemicals | kg | 6.5% |
| Drugs: | |||
| 2933.99.26.00 | Antihistamines | kg | 6.5% |
| Anti-infective agents: | |||
| 2933.99.42.00 | Acriflavine; Acriflavine hydrochloride; Carbadox; and Pyrazinamide | kg | Free |
| 2933.99.46.00 | Other | kg | 6.5% |
| Cardiovascular drugs: | |||
| 2933.99.51.00 | Hydralazine hydrochloride | kg | Free |
| 2933.99.53.00 | Other | kg | 6.5% |
| Drugs primarily affecting the central nervous system: | |||
| 2933.99.55 | Analgesics, antipyretics and nonhormonal anti-inflammatory agents | 6.5% | |
| 2933.99.55.10 | Tolmetin | kg | |
| 2933.99.55.20 | Tolmetin sodium dihydrate | kg | |
| 2933.99.55.30 | Tolmetin sodium (anhydrous) | kg | |
| 2933.99.55.90 | Other | kg | |
| Antidepressants, tranquilizers and other psychotherapeutic agents: | |||
| 2933.99.58.00 | Droperidol; and Imipramine hydrochloride | kg | Free |
| 2933.99.61.00 | Other | kg | 6.5% |
| 2933.99.65.00 | Anticonvulsants, hypnotics and sedatives | kg | 6.5% |
| 2933.99.70.00 | Other | kg | 6.5% |
| 2933.99.75.00 | Other | kg | 6.5% |
| Other: | |||
| 2933.99.79.00 | Products described in additional U.S. note 3 to section VI | kg | 6.5% |
| 2933.99.82 | Other | 6.5% | |
| 2933.99.82.10 | Benzotriazole (CAS No. 95-14-7) | kg | |
| 2933.99.82.20 | Tolyltriazole (CAS No. 29385-43-1) | kg | |
| 2933.99.82.90 | Other | kg | |
| Other: | |||
| 2933.99.85.00 | 3-Amino-1,2,4-triazole | kg | 3.7% |
| 2933.99.89.00 | Hexamethyleneimine | kg | Free |
| Other: | |||
| 2933.99.90.00 | Drugs | kg | 3.7% |
| 2933.99.97.01 | Other | kg | 6.5% |
Common paperwork mistakes with heading 2933
- The invoice shows the exporter's own code. Only the first six digits are shared worldwide; the US number has ten. Check every line against the list above.
- The quantity is in the wrong unit. These lines report quantity in kg, which may not match the invoice's cartons, sets or pieces.
- The packing list and the bill of lading disagree on cartons or gross weight, which can lead to holds and exams.
- The manufacturer's name and address are missing, so the MID cannot be built from the documents.
Look up any ten-digit number, or read the guide to invoice and packing list mismatches.
Check the whole shipment, not one number
FreightProof reads the invoice, packing list and bill of lading together, validates every HTS number and container, builds the MIDs and flags what does not match — in about two minutes.
Data: Harmonized Tariff Schedule of the United States, US International Trade Commission. Rates are for information only.