Thioguanine from Mexico
Thioguanine (6-TG) is a guanine analog chemotherapy drug containing fused purine heterocycle with sulfur substitution, used for acute myeloid leukemia. Classified HTS 2934.99.4700 as heterocyclic drug per numerical order rule over organo-sulfur heading 2930. Chemically defined active pharmaceutical ingredient.
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
• NCI Investigational Drug Branch clearance if research grade; sulfur odor containment packaging; TPMT genotyping documentation recommended