Lofentanil from Mexico
Lofentanil is a selective fentanyl derivative opioid with a piperidine nitrogen hetero-ring and unfused pyridine structural elements, known for high potency. It fits HTS 2933.34.00.00 as an other fentanyl under chapter 29's heterocyclic provisions for separate organic compounds. Primarily a research chemical import.
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
• Research use requires institutional DEA approval; provide impurity profiles per chapter note (a); steer clear of retail packaging that triggers Chapter 30 reclassification