6-Bromo-5-methyl-1H-imidazo[4,5-b]pyridine from Canada
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 — Canada → United States
110%
Rate breakdown
9903.04.6094.2%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
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