5-Fluorouracil from Mexico
5-Fluorouracil is a fluorinated pyrimidine analog used as an antineoplastic drug for cancer chemotherapy. This chemically defined heterocyclic compound with nitrogen heteroatoms qualifies under HTS 2934.99.4700 as 'other heterocyclic drugs.' Its pharmaceutical drug status distinguishes it from industrial chemicals.
Duty Rate — Mexico → United States
110%
Rate breakdown
9903.04.6096.3%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
• Obtain DEA controlled substance registration if bulk API; provide pharmacopeial compliance certificates (USP/EP); watch for contamination risks during transport requiring validated packaging