Partida 2933: Compuestos heterocíclicos con heteroátomo(s) de nitrógeno…
Tarifas de importación de Estados Unidos para la partida 2933. Los nombres de las subpartidas están en español; debajo de cada una aparecen los códigos de EE. UU. con su descripción oficial (en inglés) y su tarifa general.
Compuestos heterocíclicos con heteroátomo(s) de nitrógeno exclusivamente
Capítulo 29: Productos químicos orgánicos. Arancel revisado el 4 de octubre de 2026.
2933.11 Fenazona (antipirina) y sus derivados
| Código (HTS) | Descripción oficial | Tarifa general |
|---|---|---|
| 2933.11.00.00 | Phenazone (Antipyrine) and its derivatives | 6.5% |
2933.19 Los demás
| Código (HTS) | Descripción oficial | Tarifa general |
|---|---|---|
| 2933.19 | Other: | |
| 2933.19.04.00 | Aminomethylphenylpyrazole (Phenylmethylaminopyrazole); and 3-Methyl-1-(p-tolyl)-2-pyrazolin-5-one (p-Tolyl methyl pyrazolone) | Libre (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 | 5.8% |
| 2933.19.15.00 | 1,2-Dimethyl-3,5-diphenyl-1H-pyrazolium methyl sulfate (Difenzoquat methyl sulfate) | Libre (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 | Libre (Free) |
| 2933.19.23.00 | Pesticides | 6.5% |
| 2933.19.30 | Photographic chemicals | 6.5% |
| 2933.19.30.10 | Couplers, for use in color negative photographic paper | |
| 2933.19.30.95 | Other | |
| 2933.19.35.00 | Drugs | 6.5% |
| 2933.19.37.00 | Products described in additional U.S. note 3 to section VI | 6.5% |
| 2933.19.43.00 | Other | 6.5% |
| 2933.19.45.00 | Drugs | 3.7% |
| 2933.19.70.00 | 3-Methyl-5-pyrazolone | Libre (Free) |
| 2933.19.90.00 | Other | 6.5% |
2933.21 Hidantoína y sus derivados
| Código (HTS) | Descripción oficial | Tarifa general |
|---|---|---|
| 2933.21.00.00 | Hydantoin and its derivatives | 6.5% |
2933.29 Los demás
| Código (HTS) | Descripción oficial | Tarifa general |
|---|---|---|
| 2933.29 | Other: | |
| 2933.29.05.00 | 1-[1-((4-Chloro-2-(trifluoromethyl)phenyl)- imino)-2-propoxyethyl]-1H-imidazole (Triflumizole); and Ethylene thiourea | Libre (Free) |
| 2933.29.10.00 | 2-Phenylimidazole | 5.8% |
| 2933.29.20.00 | Drugs | 6% |
| 2933.29.35.00 | Products described in additional U.S. note 3 to section VI | 6.5% |
| 2933.29.43.00 | Other | 6.5% |
| 2933.29.45.00 | Drugs | 3.7% |
| 2933.29.60.00 | Imidazole | Libre (Free) |
| 2933.29.90.00 | Other | 6.5% |
2933.31 Piridina y sus sales
| Código (HTS) | Descripción oficial | Tarifa general |
|---|---|---|
| 2933.31.00.00 | Pyridine and its salts | Libre (Free) |
2933.32 Piperidina y sus sales
| Código (HTS) | Descripción oficial | Tarifa general |
|---|---|---|
| 2933.32 | Piperidine and its salts: | |
| 2933.32.10.00 | Piperidine | 6.5% |
| 2933.32.50.00 | Other | 6.5% |
2933.33 Alfentanilo (DCI), anileridina (DCI), bezitramida (DCI), bromazepam (DCI), carfentanilo (DCI), cetobemidona (DCI), difenoxilato (DCI), difenoxina (DCI), dipipanona (DCI), fenciclidina (DCI) (PCP), fenoperidina (DCI), fentanilo (DCI), metilfenidato (DCI), pentazocina (DCI), petidina (DCI), intermedio A de la petidina (DCI), pipradrol (DCI), piritramida (DCI), propiram (DCI), remifentanilo (DCI) y trimeperidina (DCI); sales de estos productos
| Código (HTS) | Descripción oficial | Tarifa general |
|---|---|---|
| 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 | Libre (Free) |
2933.34 Los demás fentanilos y sus derivados
| Código (HTS) | Descripción oficial | Tarifa general |
|---|---|---|
| 2933.34.00.00 | Other fentanyls and their derivatives | 6.5% |
2933.35 Quinuclidin-3-ol
| Código (HTS) | Descripción oficial | Tarifa general |
|---|---|---|
| 2933.35.00.00 | 3-Quinuclidinol | 5.8% |
2933.36 4-Anilino-N-fenetilpiperidina (ANPP)
| Código (HTS) | Descripción oficial | Tarifa general |
|---|---|---|
| 2933.36.00.00 | 4-Anilino-N-phenethylpiperidine (ANPP) | 6.5% |
2933.37 N-Fenetil-4-piperidona (NPP)
| Código (HTS) | Descripción oficial | Tarifa general |
|---|---|---|
| 2933.37.00.00 | N-Phenethyl-4-piperidone (NPP) | 6.5% |
2933.39 Los demás
| Código (HTS) | Descripción oficial | Tarifa general |
|---|---|---|
| 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 | Libre (Free) |
| 2933.39.10.00 | Collidines, lutidines and picolines | Libre (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 | 5.8% |
| 2933.39.21.00 | Fungicides | 6.5% |
| 2933.39.23.00 | o-Paraquat dichloride | 6.5% |
| 2933.39.25.00 | Other | 6.5% |
| 2933.39.27.00 | Other | 6.5% |
| 2933.39.31.00 | Antidepressants, tranquilizers and other psychotherapeutic agents | 6.5% |
| 2933.39.41.00 | Other | 6.5% |
| 2933.39.61 | Products described in additional U.S. note 3 to section VI | 6.5% |
| 2933.39.61.10 | 3-Quinuclidinyl benzilate | |
| 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) | |
| 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) | |
| 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 | |
| 2933.39.61.92 | Other | |
| 2933.39.92.00 | Other | 6.5% |
2933.41 Levorfanol (DCI) y sus sales
| Código (HTS) | Descripción oficial | Tarifa general |
|---|---|---|
| 2933.41.00.00 | Levorphanol (INN) and its salts | Libre (Free) |
2933.49 Los demás
| Código (HTS) | Descripción oficial | Tarifa general |
|---|---|---|
| 2933.49 | Other: | |
| 2933.49.08.00 | 4,7-Dichloroquinoline | 6.5% |
| 2933.49.10.00 | Ethoxyquin (1,2-Dihydro-6-ethoxy-2,2,4- trimethylquinoline) | 6.5% |
| 2933.49.15.00 | 8-Methylquinoline and Isoquinoline | 5.8% |
| 2933.49.17.00 | Ethyl ethyl-6,7,8-trifluoro-1,4-dihydro-4-oxo-3- quinolinecarboxylate | Libre (Free) |
| 2933.49.20.00 | 5-Chloro-7-iodo-8-quinolinol (Iodo chlo rhydroxy quin); Deco quinate; Diiodo hydroxy quin; and Oxy quinoline sulfate | 6.5% |
| 2933.49.26.00 | Other | 6.5% |
| 2933.49.30.00 | Pesticides | 6.5% |
| 2933.49.60.00 | Products described in additional U.S. note 3 to section VI | 6.5% |
| 2933.49.70.00 | Other | 6.5% |
2933.52 Malonilurea (ácido barbitúrico) y sus sales
| Código (HTS) | Descripción oficial | Tarifa general |
|---|---|---|
| 2933.52 | Malonylurea (Barbituric acid) and its salts: | |
| 2933.52.10.00 | Malonylurea (barbituric acid) | Libre (Free) |
| 2933.52.90.00 | Other | Libre (Free) |
2933.53 Alobarbital (DCI), amobarbital (DCI), barbital (DCI), butalbital (DCI), butobarbital, ciclobarbital (DCI), fenobarbital (DCI), metilfenobarbital (DCI), pentobarbital (DCI), secbutabarbital (DCI), secobarbital (DCI) y vinilbital (DCI); sales de estos productos
| Código (HTS) | Descripción oficial | Tarifa general |
|---|---|---|
| 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 | Libre (Free) |
2933.54 Los demás derivados de la malonilurea (ácido barbitúrico); sales de estos productos
| Código (HTS) | Descripción oficial | Tarifa general |
|---|---|---|
| 2933.54.00.00 | Other derivatives of malonylurea (barbituric acid); salts thereof | 3.7% |
2933.55 Loprazolam (DCI), meclocualona (DCI), metacualona (DCI) y zipeprol (DCI); sales de estos productos
| Código (HTS) | Descripción oficial | Tarifa general |
|---|---|---|
| 2933.55.00.00 | Loprazolam (INN), mecloqualone (INN), methaqualone (INN) and zipeprol (INN); salts thereof | Libre (Free) |
2933.59 Los demás
| Código (HTS) | Descripción oficial | Tarifa general |
|---|---|---|
| 2933.59 | Other: | |
| 2933.59.10.00 | Herbicides | 6.5% |
| 2933.59.15.00 | Other | 6.5% |
| 2933.59.18.00 | Other | 6.5% |
| 2933.59.21.00 | Antihistamines, including those principally used as anti-nauseants | 6.5% |
| 2933.59.22.00 | Nicarbazin; and Trimethoprim | 6.5% |
| 2933.59.36.00 | Other | 6.5% |
| 2933.59.46.00 | Antidepressants, tranquilizers and other psychotherapeutic agents | 6.5% |
| 2933.59.53.00 | Other | 6.5% |
| 2933.59.59.00 | Other | 3.7% |
| 2933.59.70.00 | Products described in additional U.S. note 3 to section VI | 6.5% |
| 2933.59.80.00 | Other | 6.5% |
| 2933.59.85.00 | 2-Amino-4-chloro-6-methoxy pyrimidine; 2-Amino-4,6-di methoxy pyrimidine; and 6-Methyl uracil | Libre (Free) |
| 2933.59.95.00 | Other | 6.5% |
2933.61 Melamina
| Código (HTS) | Descripción oficial | Tarifa general |
|---|---|---|
| 2933.61.00.00 | Melamine | 3.5% |
2933.69 Los demás
| Código (HTS) | Descripción oficial | Tarifa general |
|---|---|---|
| 2933.69 | Other: | |
| 2933.69.20.00 | 2,4-Diamino-6-phenyl-1,3,5-triazine | Libre (Free) |
| 2933.69.50.00 | Hexamethylenetetramine | 6.3% |
| 2933.69.60 | Other | 3.5% |
| 2933.69.60.10 | Cyanuric chloride | |
| 2933.69.60.15 | Sodium dichloroisocyanurate and trichloroisocyanuric acid | |
| 2933.69.60.21 | Other | |
| 2933.69.60.30 | Products used principally for rubber processing | |
| 2933.69.60.50 | Other |
2933.71 6-Hexanolactama (épsilon-caprolactama)
| Código (HTS) | Descripción oficial | Tarifa general |
|---|---|---|
| 2933.71.00.00 | 6-Hexanelactam (ε-Caprolactam) | 6.5% |
2933.72 Clobazam (DCI) y metiprilona (DCI)
| Código (HTS) | Descripción oficial | Tarifa general |
|---|---|---|
| 2933.72.00.00 | Clobazam (INN) and methyprylon (INN) | Libre (Free) |
2933.79 Las demás lactamas
| Código (HTS) | Descripción oficial | Tarifa general |
|---|---|---|
| 2933.79 | Other lactams: | |
| 2933.79.04.00 | 2,5-Dihydro-3,6-diphenylpyrrolo-(3,4-c)- pyrrole-1,4-dione | Libre (Free) |
| 2933.79.08.00 | Products described in additional U.S. note 3 to section VI | 6.5% |
| 2933.79.15.00 | Other | 6.5% |
| 2933.79.20.00 | N-Methyl-2-pyrrolidone; and 2-Pyrrolidone | 4.2% |
| 2933.79.30.00 | N-Vinyl-2-pyrrolidone, monomer | 5.5% |
| 2933.79.40.00 | 12-Aminododecanoic acid lactam | Libre (Free) |
| 2933.79.85.00 | Other | 6.5% |
2933.91 Alprazolam (DCI), camazepam (DCI), clonazepam (DCI), clorazepato, clordiazepóxido (DCI), delorazepam (DCI), diazepam (DCI), estazolam (DCI), fludiazepam (DCI), flunitrazepam (DCI), flurazepam (DCI), halazepam (DCI), loflazepato de etilo (DCI), lorazepam (DCI), lormetazepam (DCI), mazindol (DCI), medazepam (DCI), midazolam (DCI), nimetazepam (DCI), nitrazepam (DCI), nordazepam (DCI), oxazepam (DCI), pinazepam (DCI), pirovalerona (DCI), prazepam (DCI), temazepam (DCI), tetrazepam (DCI) y triazolam (DCI); sales de estos productos
| Código (HTS) | Descripción oficial | Tarifa general |
|---|---|---|
| 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 | Libre (Free) |
| 2933.91.00.10 | Lorazepam (INN); salts thereof | |
| 2933.91.00.50 | Other |
2933.92 Azinfos metil (ISO)
| Código (HTS) | Descripción oficial | Tarifa general |
|---|---|---|
| 2933.92.00.00 | Azinphos-methyl | Libre (Free) |
2933.99 Los demás
| Código (HTS) | Descripción oficial | Tarifa general |
|---|---|---|
| 2933.99 | Other: | |
| 2933.99.01.00 | Butyl (R)-2-[4-(5-trifluoromethyl-2- pyridinyloxy)phenoxy]propanoate | Libre (Free) |
| 2933.99.02.00 | 2-[4-[(6-Chloro-2-quinoxalinyl)oxy]phenoxy]- propionic acid, ethyl ester | Libre (Free) |
| 2933.99.05.00 | Acridine and indole | Libre (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) | 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 | Libre (Free) |
| 2933.99.11.00 | Carbazole | Libre (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 | 5.8% |
| 2933.99.14.00 | 5-Amino-4-chloro-α-phenyl-3- pyridazinone | 6.5% |
| 2933.99.16.00 | o-Diquat dibromide (1,1'-Ethylene- 2,2'-dipyridylium dibromide) | Libre (Free) |
| 2933.99.17.01 | Insecticides | 6.5% |
| 2933.99.22.00 | Other | 6.5% |
| 2933.99.24.00 | Photographic chemicals | 6.5% |
| 2933.99.26.00 | Antihistamines | 6.5% |
| 2933.99.42.00 | Acriflavine; Acriflavine hydrochloride; Carbadox; and Pyrazinamide | Libre (Free) |
| 2933.99.46.00 | Other | 6.5% |
| 2933.99.51.00 | Hydralazine hydrochloride | Libre (Free) |
| 2933.99.53.00 | Other | 6.5% |
| 2933.99.55 | Analgesics, antipyretics and nonhormonal anti-inflammatory agents | 6.5% |
| 2933.99.55.10 | Tolmetin | |
| 2933.99.55.20 | Tolmetin sodium dihydrate | |
| 2933.99.55.30 | Tolmetin sodium (anhydrous) | |
| 2933.99.55.90 | Other | |
| 2933.99.58.00 | Droperidol; and Imipramine hydrochloride | Libre (Free) |
| 2933.99.61.00 | Other | 6.5% |
| 2933.99.65.00 | Anticonvulsants, hypnotics and sedatives | 6.5% |
| 2933.99.70.00 | Other | 6.5% |
| 2933.99.75.00 | Other | 6.5% |
| 2933.99.79.00 | Products described in additional U.S. note 3 to section VI | 6.5% |
| 2933.99.82 | Other | 6.5% |
| 2933.99.82.10 | Benzotriazole (CAS No. 95-14-7) | |
| 2933.99.82.20 | Tolyltriazole (CAS No. 29385-43-1) | |
| 2933.99.82.90 | Other | |
| 2933.99.85.00 | 3-Amino-1,2,4-triazole | 3.7% |
| 2933.99.89.00 | Hexamethyleneimine | Libre (Free) |
| 2933.99.90.00 | Drugs | 3.7% |
| 2933.99.97.01 | Other | 6.5% |
Cómo leer estas tarifas
Tarifa general. Es la que paga la mercadería de casi todos los países al entrar a Estados Unidos (los que tienen relaciones comerciales normales). «Libre (Free)» significa que no paga arancel. Puede ser un porcentaje del valor, un monto por unidad o una combinación.
Tarifas preferenciales. Si tu país tiene un tratado de libre comercio u otro programa con EE. UU., la mercadería que cumple las reglas de origen puede pagar menos. Esa columna aparece al abrir cada código.
Recargos adicionales. Sobre la tarifa general pueden aplicarse aranceles adicionales por país de origen o por producto (capítulo 99 del arancel). Al abrir un código verás los que estén vigentes y podrás recibir un aviso por correo si la tarifa cambia.
Información de referencia, no es asesoramiento legal ni aduanero. El texto oficial es el del arancel de EE. UU., en inglés; la clasificación y la tarifa aplicable las determina la aduana (CBP). Confírmalas con un agente aduanal con licencia antes de embarcar. Nombres en español: Sistema Armonizado 2022 en español, según la Nomenclatura Combinada 2026 de la Unión Europea (Eurostat). Tarifas: U.S. International Trade Commission.
¿Buscas un proveedor en Estados Unidos?
Encuentra fabricantes y exportadores de EE. UU. por producto, o pide que te contacten sin crear una cuenta.