Cytidine Triphosphate (CTP) Disodium Salt from Mexico
CTP disodium salt serves as a substrate in RNA polymerase reactions and pharmaceutical intermediates. It qualifies for HTS 2934.99.39.00 as a chemically defined nucleic acid salt listed in additional U.S. note 3.
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 molecular weight verification and HPLC purity data in import documentation
• Label shipments with UN number for biochemical substances if applicable
• Confirm research institution affiliation for potential duty exemptions