Other
Heterocyclic compounds with nitrogen hetero-atom(s) only. > Compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused: > Other > Other
Duty Rate (from China)
Products classified under Tariff item 2933.4
Levorphanol Hydrochloride
Levorphanol hydrochloride is the hydrochloride salt of levorphanol, a synthetic opioid analgesic. It retains the isoquinoline ring-system characteristic of the base compound and is classified under this tariff item as a salt of levorphanol (INN).
2933.41.00Levorphanol (S)-Tartrate Dihydrate
Levorphanol (S)-tartrate dihydrate is a crystalline salt of levorphanol with tartaric acid, containing water of crystallization. The hydrated form does not change the chemical identity of the salt, so it remains classified as a salt of levorphanol (INN) under this tariff item.
2933.41.00Levorphanol Sulfate
Levorphanol sulfate is the sulfate salt of levorphanol, a synthetic opioid with an isoquinoline ring-system. As a salt of levorphanol (INN), it is covered by this tariff item, which includes both the base compound and its salts.
2933.41.00Levorphanol Tartrate
Levorphanol tartrate is the tartrate salt of levorphanol, a potent opioid agonist with an isoquinoline ring-system. This tariff item covers levorphanol (INN) and its salts, including the tartrate form, regardless of the acid used for salt formation.
2933.41.00Pharmaceutical Grade Levorphanol Base
Pharmaceutical grade levorphanol base is the pure form of levorphanol (INN), a morphinan opioid with an isoquinoline ring-system. This tariff item explicitly covers levorphanol (INN) itself, so the base compound is classified here even when imported for subsequent salt formation.
2933.49.004,7-Dichloroquinoline
4,7-Dichloroquinoline is a heterocyclic organic compound featuring a quinoline ring system with chlorine atoms at the 4 and 7 positions. It is a separate chemically defined compound, qualifying under Chapter 29 Note 1(a) as a product of heading 29.33. This compound is primarily used as a synthetic intermediate in the production of pharmaceuticals and agrochemicals.
2933.49.004,7-Dichloroquinoline 98% Technical Grade
Technical grade 4,7-dichloroquinoline with 98% purity is a separate chemically defined organic compound containing a quinoline ring system. It falls under Chapter 29 Note 1(a) as a product of heading 29.33. This compound is used as a synthetic intermediate for agrochemicals and pharmaceuticals.
2933.49.004,7-Dichloroquinoline Hydrochloride Salt
4,7-Dichloroquinoline hydrochloride salt is an inorganic salt of an organic compound with a quinoline ring system. Under Chapter 29 Note 5(C)(1), inorganic salts of organic compounds are classified in the heading appropriate to the organic compound. Therefore, it is classified under heading 29.33.
2933.49.004,7-Dichloroquinoline in Ethanol Solution 10% w/v
A 10% w/v solution of 4,7-dichloroquinoline in ethanol is a separate chemically defined compound dissolved in a solvent. The ethanol solution is a normal and necessary method for safe transport, as allowed under Chapter 29 Note 1(e). The solvent does not make the product suitable for a specific use, so it remains classified under heading 29.33.
2933.49.004,7-Dichloroquinoline Stabilized with Antioxidant
Stabilized 4,7-dichloroquinoline with an added antioxidant is a separate chemically defined compound with a quinoline ring system. The stabilizer is necessary for preservation or transport, as permitted under Chapter 29 Note 1(f). The addition does not make the product suitable for a specific use, so it remains classified under heading 29.33.
2933.49.004,7-Dichloroquinoline with Anti-Dusting Agent
4,7-Dichloroquinoline powder treated with an anti-dusting agent is a separate chemically defined compound with a quinoline ring system. The addition of the anti-dusting agent is permitted under Chapter 29 Note 1(g) as it facilitates safe handling without making the product suitable for a specific use. It remains classified under heading 29.33.
2933.49.005-Chloro-7-iodo-8-quinolinol (Iodo chlorhydroxyquin)
5-Chloro-7-iodo-8-quinolinol (iodochlorhydroxyquin), a halogenated quinoline derivative with antimicrobial properties, used as a drug. It is classified under tariff item 2933.49.00 as a quinoline compound with therapeutic use.
2933.49.006,7,8-Trifluoro-4-Oxo-1,4-Dihydroquinoline-3-Carboxylic Acid Ethyl Ester
6,7,8-Trifluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid ethyl ester, a fluorinated quinolinecarboxylate intermediate used in organic synthesis for advanced pharmaceutical intermediates. It is a separate chemically defined compound classified under tariff item 2933.49.00.
2933.49.008-Methylquinoline
8-Methylquinoline is a heterocyclic aromatic compound with a quinoline ring system and a methyl group at the 8-position. It is a separate chemically defined organic compound used as an intermediate in chemical synthesis, classified under tariff item 2933.49.00.
2933.49.008-Methylquinoline 98% Purity Technical Grade
Technical grade 8-methylquinoline at 98% purity, a chemically defined organic compound with a quinoline ring system, used in dye manufacturing and as a reagent. It falls under tariff item 2933.49.00 as an other quinoline derivative.
2933.49.008-Methylquinoline for Synthesis
Laboratory reagent grade 8-methylquinoline, a separate chemically defined compound under Chapter 29 note (a), used in multi-step organic synthesis for research and development. It is classified under tariff item 2933.49.00.
2933.49.008-Methylquinoline in Ethanol Solution
A 10% solution of 8-methylquinoline in ethanol, prepared for safe transport. Under Chapter 29 note (e), solutions in solvents are classified with the pure compound if the solvent is necessary for safety or transport and does not make the product suitable for a specific use. This falls under tariff item 2933.49.00.
2933.49.008-Methylquinoline Reference Standard
USP/NF grade 8-methylquinoline reference standard, a chemically pure compound used for analytical method validation in pharmaceutical quality control. It is classified under tariff item 2933.49.00 as a quinoline derivative.
2933.49.00Chloroquine Phosphate
Chloroquine phosphate is a 4-aminoquinoline antimalarial drug containing the quinoline ring system. It is used to treat and prevent malaria and certain autoimmune conditions. This bulk powder is classified under tariff item 2933.49.00 for other quinoline compounds and is imported for pharmaceutical production.
2933.49.00Decoquinate USP Powder
Decoquinate is a quinoline-based coccidiostat used in veterinary medicine to prevent coccidiosis in poultry and cattle. As a pure heterocyclic nitrogen compound with a quinoline ring system, it is classified under tariff item 2933.49.00 for other quinoline or isoquinoline compounds. This bulk powder is imported for formulation into animal feed additives.
2933.49.00Diiodohydroxyquinoline (Diodoquin)
Diiodohydroxyquinoline, or Diodoquin, is an anti-infective quinoline derivative with iodine substitutions, used to treat intestinal amebiasis. Its quinoline ring system places it under tariff item 2933.49.00 for other quinoline or isoquinoline compounds. This drug is imported in bulk for pharmaceutical manufacturing.
2933.49.00Ethoxyquin 66% Liquid Premix
Ethoxyquin 66% liquid premix is a solution of ethoxyquin in propylene glycol, used as an oxidation inhibitor in animal feeds. Ethoxyquin is a quinoline derivative, and the solution is a normal method of putting up the product for safety or transport, as per Chapter 29 Note 1(e). It falls under heading 29.33.
2933.49.00Ethoxyquin Antioxidant Powder
Pure ethoxyquin (1,2-dihydro-6-ethoxy-2,2,4-trimethylquinoline) in powder form is a separate chemically defined compound with a quinoline ring system. It is used as a synthetic antioxidant in animal feeds and pet foods. It qualifies under Chapter 29 Note 1(a) as a product of heading 29.33.
2933.49.00Ethoxyquin Aquaculture Preservative Solution
A 33% ethoxyquin solution in vegetable oil is used for fish feed preservation. The solution is a normal method of putting up the product for safety or transport, as per Chapter 29 Note 1(e). Ethoxyquin is a quinoline derivative, and the product falls under heading 29.33.
2933.49.00Ethoxyquin Feed Grade 95% Crystals
Ethoxyquin feed grade 95% crystals are a separate chemically defined compound with a quinoline ring system, used as an antioxidant in animal feed. It qualifies under Chapter 29 Note 1(a) as a product of heading 29.33. The crystalline form does not affect classification.
2933.49.00Ethoxyquin Pet Food Stabilizer Granules
Granulated ethoxyquin with an anti-dusting agent is a separate chemically defined compound with a quinoline ring system. The anti-dusting agent is permitted under Chapter 29 Note 1(g) as it facilitates safe handling without making the product suitable for a specific use. It remains classified under heading 29.33.
2933.49.00Ethoxyquin Rubber Antioxidant Pellets
Ethoxyquin pellets for rubber compounding are a separate chemically defined compound with a quinoline ring system, used as an antioxidant. Despite the end-use in rubber, the product is a separate defined organic compound, as per Chapter 29 Note 1(a). It falls under heading 29.33.
2933.49.00Ethoxyquin Technical Grade Flakes
Technical grade ethoxyquin in flake form (90% minimum purity) is a separate chemically defined compound with a quinoline ring system. It is used in manufacturing animal feed antioxidants and rubber stabilizers. It qualifies under Chapter 29 Note 1(a) as a product of heading 29.33.
2933.49.00Ethoxyquin with Stabilizer Beads
Ethoxyquin beads with an added anticaking stabilizer are a separate chemically defined compound with a quinoline ring system. The stabilizer is necessary for preservation during transport, as permitted under Chapter 29 Note 1(f). It remains classified under heading 29.33.
2933.49.00Ethyl 6,7,8-Trifluoro-1,4-Dihydro-4-Oxo-3-Quinolinecarboxylate
Ethyl 6,7,8-trifluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylate, a chemically defined heterocyclic compound with a quinoline ring system and trifluoro substitutions. It serves as a key intermediate in pharmaceutical synthesis and is classified under tariff item 2933.49.00.
2933.49.00Ethyl Ethyl-6,7,8-Trifluoro-1,4-Dihydro-4-Oxoquinoline-3-Carboxylate Powder
Pharmaceutical-grade powder of ethyl 6,7,8-trifluoro-1,4-dihydro-4-oxoquinoline-3-carboxylate, used in API synthesis for antibacterial drugs. It is a separate chemically defined organic compound with a quinoline ring system, classified under tariff item 2933.49.00.
2933.49.00High Purity 4,7-Dichloroquinoline 99.5%+ for API Synthesis
Ultra-high purity 4,7-dichloroquinoline (>99.5%) is a separate chemically defined compound with a quinoline ring system, used for active pharmaceutical ingredient synthesis. It qualifies under Chapter 29 Note 1(a) as a product of heading 29.33. The high purity does not affect classification.
2933.49.00High-Purity Ethoxyquin USP Grade
High-purity ethoxyquin (greater than 98% purity) meeting USP standards, used as a reference standard and research chemical. As a separate chemically defined quinoline compound, it is classified under tariff item 2933.49.00, which covers other quinoline or isoquinoline ring-system compounds.
2933.49.00Hydroxychloroquine Sulfate
Hydroxychloroquine sulfate is a 4-aminoquinoline derivative with a hydroxy substitution, used for antimalarial and autoimmune treatments. Its quinoline ring structure classifies it under tariff item 2933.49.00 for other quinoline compounds. This bulk API is imported for pharmaceutical manufacturing.
2933.49.00Iodo Chlorhydroxyquin API Bulk Powder
Iodo Chlorhydroxyquin, or 5-Chloro-7-iodo-8-quinolinol, is a bulk active pharmaceutical ingredient used as an anti-infective agent. Its quinoline ring system with halogen substitutions classifies it under tariff item 2933.49.00 for other quinoline compounds. This API is imported for use in topical or oral pharmaceutical formulations.
2933.49.00Isoquinoline
Isoquinoline is a heterocyclic compound with an isoquinoline ring system, used as a building block in the synthesis of pharmaceuticals such as papaverine and berberine. It is a separate chemically defined compound classified under tariff item 2933.49.00.
2933.49.00Isoquinoline 95% with Stabilizer
Isoquinoline at 95% purity with a stabilizer added for transport, allowed under Chapter 29 note (f). The stabilizer is necessary for preservation or transport and does not render the product suitable for a specific use. It falls under tariff item 2933.49.00.
2933.49.00Isoquinoline Anti-Dusting Grade
Isoquinoline with an anti-dusting agent added for safety, permitted under Chapter 29 note (g). The additive facilitates identification or safety and does not make the product suitable for a specific use. It is classified under tariff item 2933.49.00.
2933.49.00Isoquinoline for Dye Coupling
High purity isoquinoline used as a dye coupler intermediate, classified as a pure compound under tariff item 2933.49.00 despite its end use. It is not excluded under Chapter 29 note (g) as the product is not put up for retail sale as a dye.
2933.49.00Isoquinoline Hydrochloride Salt
Isoquinoline hydrochloride is the HCl salt of isoquinoline, classified with the parent organic compound under Chapter 29 note 5(C)(1). It is used in medicinal chemistry research and falls under tariff item 2933.49.00.
2933.49.00Mefloquine Hydrochloride
Mefloquine hydrochloride is a 4-quinoline methanol derivative used for malaria prophylaxis and treatment. Its quinoline ring system classifies it under tariff item 2933.49.00 for other quinoline compounds. This bulk API is imported for pharmaceutical production, often for military or travel medicine.
2933.49.00Oxyquinoline Sulfate Pharmaceutical Grade
Oxyquinoline sulfate is a quinoline-based antimicrobial agent used for its bacteriostatic properties in pharmaceuticals. The compound contains a quinoline ring system with a sulfate salt, classifying it under tariff item 2933.49.00 for other quinoline compounds. This pharmaceutical-grade powder is imported for drug manufacturing.
2933.49.00Pamaquine Base
Pamaquine base, also known as plasmoquine, is an 8-aminoquinoline antimalarial with a quinoline ring system. It is historically significant in malaria treatment and is now mainly imported for research purposes. This compound classifies under tariff item 2933.49.00 for other quinoline compounds.
2933.49.00Primaquine Phosphate
Primaquine phosphate is a synthetic 8-aminoquinoline antimalarial drug with the requisite quinoline ring structure. It is used to prevent relapse of malaria and treat Pneumocystis pneumonia. This bulk powder classifies under tariff item 2933.49.00 for other quinoline compounds and is imported for pharmaceutical manufacturing.
2933.49.00Quinidine Sulfate
Quinidine sulfate is a cinchona alkaloid derivative containing a quinoline ring system, used primarily as an antiarrhythmic drug for treating heart rhythm disorders. Its quinoline structure classifies it under tariff item 2933.49.00 for other quinoline compounds. This bulk API is imported for pharmaceutical production.