Paroxetine Hydrochloride
Paroxetine HCl, an antidepressant SSRI with a piperidine fused to tetrahydronaphthalene ring system (nitrogen hetero-atom only). Classified in 2933.99.8290 as other aromatic/modified aromatic heterocyclic compounds with N hetero-atoms. Bulk API for pharmaceutical manufacture.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing oxygen hetero-atoms in structure
Compounds with both N and O hetero-atoms classified earlier in 2933.39.
If imported as finished dosage form tablets/capsules
Medicaments in dosage form shift to Chapter 30 regardless of chemical structure.
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Import Tips & Compliance
• Submit FDA Drug Master File (DMF) and provide GMP manufacturing certificates
• Include polymorphic form specification in documentation
• Ensure chiral purity documentation for single enantiomer products
Related Products under HTS 2933.99.82.90
Caffeine Anhydrous Powder
Pure caffeine (1,3,7-trimethylxanthine), a purine alkaloid with a fused pyrimidine-imidazole ring system containing nitrogen hetero-atoms only. Classified under 2933.99.8290 as a heterocyclic compound with nitrogen hetero-atoms only, aromatic, not elsewhere specified. Used in pharmaceuticals, energy drinks, and as a chemical intermediate.
Theobromine Powder
Theobromine (3,7-dimethylxanthine), a xanthine alkaloid with nitrogen-containing fused heterocyclic rings, extracted from cocoa or synthesized. Falls under 2933.99.8290 as 'other' aromatic heterocyclic nitrogen compounds not specifically named elsewhere. Used in pharmaceuticals and as a research chemical.
Imatinib Mesylate
Imatinib mesylate, tyrosine kinase inhibitor with pyrimidine and piperazine rings (N hetero-atoms only), used in leukemia treatment. HTS 2933.99.8290 for bulk API as other aromatic heterocyclic nitrogen compounds. Key oncology pharmaceutical intermediate.
Memantine Hydrochloride
Memantine HCl, NMDA receptor antagonist with adamantane amine structure containing only nitrogen hetero-atoms. Classified 2933.99.8290 as other heterocyclic N compounds, aromatic/modified aromatic. Bulk API for Alzheimer's treatment.
Piperazine Anhydrous
Piperazine, a six-membered heterocyclic ring with two nitrogen hetero-atoms, fully saturated but considered modified aromatic. Classified 2933.99.8290 as other heterocyclic N compounds. Used as anthelmintic and chemical intermediate.
Nicotine Free Base
Nicotine (3-(1-methylpyrrolidin-2-yl)pyridine), bicyclic N-heterocyclic alkaloid with pyridine and pyrrolidine rings. 2933.99.8290 as other aromatic heterocyclic nitrogen compounds. Used in vaping products and NRT.