Cidofovir from Mexico
Cidofovir is a cytosine nucleotide analog (phosphonate nucleotide) used intravenously for cytomegalovirus retinitis in AIDS patients. As a chemically defined nucleic acid derivative drug with heterocyclic pyrimidine base, it falls under HTS 2934.99.4700. Contains phosphorus directly linked meeting Chapter 29 organo-inorganic criteria.
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
• Cold chain (-20°C) shipping required; FDA orphan drug designation documentation; phosphonate stability data essential for customs