Indoline
The fully saturated analogue of indole, explicitly listed under HTS 2933.99.1200 as a modified aromatic nitrogen heterocycle. Used as dye intermediate and pharmaceutical building block. Its bicyclic structure with nitrogen hetero-atom qualifies precisely.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If other indoline derivatives
Only parent indoline specifically named in 2933.99.1200.
If used in synthetic dye manufacture
Dye intermediates may have Chapter 32 provisions.
If containing additional heteroatoms
Nucleic acid derivatives and other heterocycles go to 2934.
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Import Tips & Compliance
• Oxidation stabilizer presence must be documented
• Dye vs pharma end-use affects documentation requirements
• Dark storage/handling instructions required
Related Products under HTS 2933.99.12.00
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.
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.