6-Bromo-5-methyl-1H-imidazo[4,5-b]pyridine
This is a specific aromatic heterocyclic compound containing nitrogen hetero-atoms only, explicitly listed in HTS 2933.99.1200. It is used as a pharmaceutical intermediate in the synthesis of antiviral and anticancer drugs. Its fused imidazole-pyridine ring structure qualifies it for classification under this subcategory of Chapter 29.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If not explicitly listed in 2933.99.1200
Other aromatic nitrogen heterocycles fall into the residual 'other' subcategory.
If containing oxygen hetero-atoms
Chapter notes exclude oxygen-containing compounds from 2933; they go to 2933.59.
If imported as a pharmaceutical salt
Organic salts of these compounds classified with the base compound per Chapter Note 3(C).
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Import Tips & Compliance
• Provide Certificate of Analysis (CoA) confirming chemical identity and purity >98% as required for listed compounds
• Include Safety Data Sheet (SDS) detailing handling precautions for brominated heterocycles
• Avoid misclassification as unlisted heterocycles (2933.99.90) by referencing the exact CAS number
Related Products under HTS 2933.99.12.00
2,4-Di-tert-butyl-6-(benzotriazol-2-yl)phenol
A specific benzotriazole UV stabilizer explicitly named in HTS 2933.99.1200, featuring aromatic nitrogen heterocycles. Used in plastics, coatings, and adhesives to prevent UV degradation. The phenolic structure with fused triazole ring places it in this exact subcategory.
dl-Tryptophan
The synthetic racemic form of the essential amino acid tryptophan, explicitly listed under HTS 2933.99.1200 as an aromatic nitrogen heterocyclic compound. Used in nutritional supplements, animal feed, and pharmaceutical intermediates. Its indole ring structure qualifies it for this specific subcategory.
2-Phenylbenzimidazole
A specific aromatic imidazole derivative explicitly listed in HTS 2933.99.1200, containing only nitrogen hetero-atoms. Used as a UV absorber in cosmetics, plastics, and pharmaceuticals. The fused benzene-imidazole structure determines its precise classification.
Tetramethylpyrazine
A specific pyrazine derivative explicitly listed under HTS 2933.99.1200, featuring a six-membered aromatic nitrogen heterocycle. Used as a flavoring agent in food and in pharmaceutical formulations for circulatory disorders. Its precise chemical structure matches the tariff nomenclature.
Vinylcarbazole Monomer
N-Vinylcarbazole monomer, explicitly listed in HTS 2933.99.1200 as an aromatic nitrogen heterocyclic compound. Polymerized to form polyvinylcarbazole used in photoreceptors, electronics, and optical applications. The carbazole ring with vinyl group determines classification.
2-Methylmercaptobenzimidazole
A specific benzimidazole derivative with organo-sulfur functionality, explicitly listed in HTS 2933.99.1200. Used as rubber vulcanization accelerator and corrosion inhibitor. Classified here rather than organo-sulfur heading 2930 per chapter notes.