Pyrimethamine
Pyrimethamine is an antifolate drug with a pyrimidine ring, used for malaria prophylaxis and toxoplasmosis treatment as an anti-infective agent. HTS 2933.59.36.00 applies to its aromatic heterocyclic structure with nitrogen hetero-atoms, aligning with chapter notes for drugs. It is imported as a bulk active pharmaceutical ingredient.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for unmodified non-drug pyrimidines
Earlier subheadings cover non-aromatic or non-drug compounds.
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Import Tips & Compliance
• Comply with WHO prequalified supplier lists; include stability data for transport; avoid anti-dusting agents that alter general use per note (g)
Related Products under HTS 2933.59.36.00
Sulfadiazine
Sulfadiazine is a synthetic antibacterial sulfonamide drug containing a pyrimidine ring in its structure, used primarily for treating infections like toxoplasmosis and urinary tract infections. It falls under HTS 2933.59.36.00 as an aromatic anti-infective agent with a nitrogen-containing heterocyclic pyrimidine ring. This classification applies to its chemically defined structure meeting chapter 29 notes for separate organic compounds.
Sulfamethazine
Sulfamethazine is a sulfonamide antibiotic with a heterocyclic pyrimidine ring, used in veterinary medicine for bacterial infections in livestock. Classified under HTS 2933.59.36.00 due to its aromatic structure and role as an anti-infective agent per chapter notes on nitrogen hetero-atom compounds. It qualifies as a separate chemically defined organic compound.
Trimethoprim
Trimethoprim is a dihydrofolate reductase inhibitor with a pyrimidine ring, used as an anti-infective for urinary tract and respiratory infections, often combined with sulfamethoxazole. It is classified in HTS 2933.59.36.00 as an aromatic anti-infective heterocyclic compound containing nitrogen hetero-atoms only. Meets chapter note (a) for separate chemically defined compounds.
Sulfadimethoxine
Sulfadimethoxine is a long-acting sulfonamide with a methoxy pyrimidine structure, used as an anti-infective in veterinary applications for poultry and cattle. Falls under HTS 2933.59.36.00 for its aromatic anti-infective properties and pyrimidine ring per chapter definitions. Classified as a pure organic compound without excluded additives.
Sulfamerazine
Sulfamerazine is a short-acting sulfonamide antibiotic featuring a pyrimidine ring, used historically for streptococcal infections. Classified in HTS 2933.59.36.00 as an aromatic anti-infective with nitrogen heterocyclic structure per chapter 29 scope. Represents a pure, chemically defined organic compound.
Sulfisoxazole
Sulfisoxazole is a sulfonamide anti-infective with an isoxazole-substituted pyrimidine-like structure, used for urinary and eye infections. It fits HTS 2933.59.36.00 under aromatic anti-infectives with pyrimidine rings, adhering to chapter notes on nitrogen hetero-atoms. Bulk form excludes finished medicaments.