Alfentanil Hydrochloride from Mexico
Alfentanil hydrochloride is the hydrochloride salt of alfentanil, a short-acting fentanyl derivative with a piperidine nitrogen heterocycle and pyridine ring influence in its structure. It is classified in HTS 2933.34.00.00 per chapter note on salts of organic compounds following the parent fentanyl derivative heading. Used as a pure chemical intermediate for rapid-onset analgesics.
Duty Rate — Mexico → United States
110%
Rate breakdown
9903.04.6093.5%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
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include salt formation proof in COA to match parent compound classification per note 3(C)(1); use stabilizers only for transport per note (f); common pitfall is forgetting bilingual hazard labeling for controlled substances