Other
Heterocyclic compounds with nitrogen hetero-atom(s) only. > Compounds containing an unfused imidazole ring (whether or not hydrogenated) in the structure: > Other > Other
Duty Rate (from China)
Products classified under Tariff item 2933.2
5,5-Diphenylhydantoin (Phenytoin Base)
5,5-Diphenylhydantoin (Phenytoin Base) is the active pharmaceutical base form of the anticonvulsant phenytoin, a classic hydantoin derivative. It is a separate chemically defined organic compound with an unfused imidazole ring, classifiable under tariff item 2933.21.00.
2933.21.00Allantoin USP
Allantoin USP is a chemically defined hydantoin derivative with an unfused imidazole ring, used in cosmetics, pharmaceuticals, and wound-healing products for its soothing and keratolytic properties. It is classified under tariff item 2933.21.00 as a hydantoin derivative, meeting the chapter 29 criteria for separate chemically defined organic compounds.
2933.21.00Dimethylol Propylene Urea
Dimethylol Propylene Urea is a hydantoin derivative used as a formaldehyde-free crosslinking agent in textile finishing and paper treatment. It is a separate chemically defined organic compound with an unfused imidazole ring, classifiable under tariff item 2933.21.00.
2933.21.00Methone (5,5-Dimethylhydantoin)
Methone (5,5-Dimethylhydantoin) is a hydantoin derivative used as an intermediate in pharmaceutical synthesis and polymer modification. It is a separate chemically defined organic compound with an unfused imidazole ring, classifiable under tariff item 2933.21.00.
2933.21.00Parabanic Acid
Parabanic Acid is a simple hydantoin derivative used as an analytical reagent and synthetic intermediate. It is a separate chemically defined organic compound with an unfused imidazole ring, classifiable under tariff item 2933.21.00.
2933.29.002-Imidazolidinethione (Ethylene Thiourea) Crystals
Crystalline ethylene thiourea (2-imidazolidinethione), a heterocyclic compound containing an unfused imidazole ring. It is used as a chemical intermediate in the synthesis of fungicides and as an accelerator in rubber processing.
2933.29.002-Phenyl-4-Methylimidazole
2-Phenyl-4-methylimidazole, a modified aromatic imidazole derivative with a phenyl group at the 2-position and a methyl group at the 4-position. Used in photographic chemicals and as a chemical intermediate.
2933.29.002-Phenylimidazole
2-Phenylimidazole, a heterocyclic compound with an unfused imidazole ring and a phenyl group at the 2-position. Used as a chemical intermediate in various applications.
2933.29.002-Phenylimidazole Hydrochloride Salt
2-Phenylimidazole hydrochloride salt, a water-soluble form of 2-phenylimidazole for pharmaceutical applications. Per Chapter 29 Note 5, salts are classified with the parent organic compound.
2933.29.002-Phenylimidazole Technical Grade
Technical grade 2-phenylimidazole (95-98% purity) used in epoxy resin curing agents and corrosion inhibitors. It is a heterocyclic compound with an unfused imidazole ring.
2933.29.00Butoconazole Nitrate
Butoconazole Nitrate is an imidazole antifungal agent featuring an unfused imidazole ring in its aromatic heterocyclic structure. It falls under tariff item 2933.29.00 for other heterocyclic compounds with nitrogen hetero-atoms only.
2933.29.00Butoconazole Nitrate USP
Butoconazole Nitrate USP is an imidazole antifungal used for vulvovaginal candidiasis. Its unfused imidazole ring classifies it under tariff item 2933.29.00 as a nitrogen heterocyclic compound.
2933.29.00Clofazimine Micronized Powder
Clofazimine Micronized Powder is a riminophenazine compound used for leprosy and Mycobacterium avium treatment. Despite its imidazole-like nitrogen heterocycle, its riminophenazine structure may not qualify as an unfused imidazole ring, so classification under 2933.29.00 requires careful review.
2933.29.00Clotrimazole API
Clotrimazole API, an aromatic imidazole antifungal agent with an unfused imidazole ring. Used in pharmaceutical formulations for topical and oral candidiasis treatment.
2933.29.00Clotrimazole Powder
Clotrimazole Powder is an imidazole antifungal agent used in pharmaceutical formulations for topical infections. Its unfused imidazole ring structure places it under tariff item 2933.29.00 as an other heterocyclic compound with nitrogen hetero-atoms only.
2933.29.00Dimetridazole Technical Grade
Dimetridazole Technical Grade is a 5-nitroimidazole compound used in veterinary medicine for treating histomoniasis in poultry. Its unfused imidazole ring structure qualifies it under tariff item 2933.29.00 for other heterocyclic compounds with nitrogen hetero-atoms only.
2933.29.00Econazole Nitrate
Econazole Nitrate is a broad-spectrum imidazole antifungal with a substituted imidazole ring structure. It falls under tariff item 2933.29.00 as an other heterocyclic compound with nitrogen hetero-atoms only.
2933.29.00Econazole Nitrate BP
Econazole nitrate BP, an imidazole derivative with aromatic structure used as a broad-spectrum antifungal for dermatological applications. It is a separate chemically defined compound.
2933.29.00Econazole Nitrate USP
Econazole Nitrate USP is a broad-spectrum imidazole antifungal used in dermatology. It contains an unfused imidazole ring, placing it under tariff item 2933.29.00 as a nitrogen heterocyclic compound.
2933.29.00Ethylene Thiourea (2-Imidazolidinethione)
Ethylene thiourea (2-imidazolidinethione), a heterocyclic imidazole compound used as a chemical intermediate and rubber vulcanization accelerator. It contains an unfused imidazole ring and is a separate chemically defined compound.
2933.29.00Ethylene Thiourea Industrial Grade
Industrial grade ethylene thiourea with the 2-imidazolidinethione structure, used as an intermediate for dithiocarbamate pesticides and in rubber processing. It is a heterocyclic compound with an unfused imidazole ring.
2933.29.00Famidazole Hydrochloride
Famidazole Hydrochloride is a nitroimidazole compound with therapeutic applications containing an unfused imidazole ring. It falls under tariff item 2933.29.00 for other heterocyclic compounds with nitrogen hetero-atoms only.
2933.29.00Fenticonazole Nitrate
Fenticonazole Nitrate is a broad-spectrum imidazole antifungal effective against dermatophytes and yeasts. Its unfused imidazole ring classifies it under tariff item 2933.29.00 as a nitrogen heterocyclic compound.
2933.29.00High Purity 2-Phenylimidazole (99%+)
High purity 2-phenylimidazole (99%+) used in antifungal drug synthesis and as a ligand in coordination chemistry. It is a separate chemically defined compound with an unfused imidazole ring.
2933.29.00Imidazole-4-Carboxylic Acid
Imidazole-4-Carboxylic Acid is a key intermediate for pharmaceutical synthesis, featuring the unfused imidazole ring required by heading 2933. It falls under tariff item 2933.29.00 as an other heterocyclic compound with nitrogen hetero-atoms only.
2933.29.00Industrial 2-Phenylimidazole for Resin Curing
Industrial 2-phenylimidazole packaged for epoxy resin curing applications in electronics. It is a pure aromatic heterocyclic compound, not a finished resin.
2933.29.00Isoconazole Nitrate
Isoconazole Nitrate is an imidazole derivative antifungal used for superficial mycoses. It features an unfused imidazole ring, placing it under tariff item 2933.29.00 as a nitrogen heterocyclic compound.
2933.29.00Ketoconazole API
Ketoconazole API is a synthetic imidazole antifungal drug with a complex aromatic imidazole ring system. Its unfused imidazole ring places it under tariff item 2933.29.00 as an other heterocyclic compound with nitrogen hetero-atoms only.
2933.29.00Ketoconazole Base
Ketoconazole base, an aromatic imidazole derivative with an unfused imidazole ring. Used systemically for fungal infections and hormonal disorders.
2933.29.00Ketoconazole USP
Ketoconazole USP is a synthetic imidazole antifungal used systemically and topically. Its unfused imidazole ring classifies it under tariff item 2933.29.00 as a nitrogen heterocyclic compound.
2933.29.00Metronidazole USP
Metronidazole USP is an aromatic nitroimidazole derivative used as an antibiotic to treat anaerobic bacterial and protozoal infections. Its unfused imidazole ring structure places it under tariff item 2933.29.00, which covers other heterocyclic compounds with nitrogen hetero-atoms only.
2933.29.00Miconazole Base
Miconazole Base is an imidazole derivative antifungal agent used as a pharmaceutical intermediate. It contains an unfused imidazole ring, classifying it as a nitrogen heterocyclic compound under tariff item 2933.29.00.
2933.29.00Miconazole Nitrate BP
Miconazole Nitrate BP is an imidazole antifungal used in oral, topical, and vaginal treatments. It contains an unfused imidazole ring, placing it under tariff item 2933.29.00 as a nitrogen heterocyclic compound.
2933.29.00Miconazole Nitrate USP
Miconazole Nitrate USP is an imidazole-class antifungal drug substance effective against dermatophytes and yeasts in topical applications. Its unfused imidazole ring qualifies it for tariff item 2933.29.00 under heterocyclic compounds with nitrogen hetero-atoms only.
2933.29.00Nimorazole USP
Nimorazole USP is a 5-nitroimidazole derivative used as a radiosensitizer in cancer therapy. Its unfused imidazole ring places it in tariff item 2933.29.00 as a nitrogen heterocyclic compound.
2933.29.00Niridazole Crystals
Niridazole Crystals is a nitrothiazole-imidazole hybrid used as an antischistosomal agent. Its unfused imidazole ring component places it under tariff item 2933.29.00, though the thiazole moiety may warrant review of the overall structure.
2933.29.00Omoconazole Pharmaceutical Intermediate
Omoconazole is a specialized aromatic imidazole drug substance developed for advanced antifungal therapies. Its unfused imidazole ring structure places it under tariff item 2933.29.00 for other heterocyclic compounds with nitrogen hetero-atoms only.
2933.29.00Ornidazole API
Ornidazole API is a nitroimidazole antimicrobial used for treating anaerobic bacterial infections and protozoal diseases. Its unfused imidazole ring structure qualifies it under tariff item 2933.29.00 for other heterocyclic compounds with nitrogen hetero-atoms only.
2933.29.00Oxiconazole Nitrate USP
Oxiconazole Nitrate USP is a topical imidazole antifungal with an unfused imidazole ring. As a nitrogen heterocyclic compound, it is classified under tariff item 2933.29.00.
2933.29.00Tinidazole Powder
Tinidazole Powder is a synthetic antiprotozoal and antibacterial agent with a nitroimidazole ring structure, used for treating amebiasis and giardiasis. Its unfused imidazole ring places it under tariff item 2933.29.00 as an other heterocyclic compound with nitrogen hetero-atoms only.
2933.29.00Tioconazole Pharmaceutical Grade
Tioconazole is a synthetic aromatic imidazole drug containing an unfused imidazole ring, primarily used for vaginal candidiasis treatment. It falls under tariff item 2933.29.00 as an other heterocyclic compound with nitrogen hetero-atoms only.
2933.29.00Tioconazole Powder
Tioconazole Powder is a 1-substituted imidazole antifungal containing an unfused imidazole ring. It falls under tariff item 2933.29.00 as an aromatic nitrogen heterocyclic compound.
2933.29.00Triflumizole 98% Technical Powder
Triflumizole technical powder (98% minimum), a fungicide active ingredient with an unfused imidazole ring. It is a separate chemically defined compound used in crop protection formulations.
2933.29.00Triflumizole Fungicide Active Ingredient
Pure triflumizole active ingredient with the characteristic 4-chloro-2-(trifluoromethyl)phenyl imidazole structure. Used in crop protection formulations as a systemic fungicide.
2933.29.00Triflumizole Technical Grade
Triflumizole technical grade, an imidazole fungicide with an unfused aromatic imidazole ring. It is a separate chemically defined compound used in agricultural applications.