2933.99.12.00/6-Bromo-5-methyl-1H-imidazo[4,5-b]pyridine/China

6-Bromo-5-methyl-1H-imidazo[4,5-b]pyridine from China

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.

Duty Rate — China → United States

100%

Rate breakdown

9903.04.6094.2%Pharmaceuticals Annex IV: patented pharma articles — 100% floor rate

9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)

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Import Tips

• 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