Tritiated Thymidine (3H-TdR) from Mexico
Radioactively labeled nucleoside [methyl-3H]thymidine used in DNA synthesis research. As an organic compound of tritium, it qualifies under HTS 2844.41.00.00 per Chapter 28 Note 1 extensions for radioactive isotopes. Supplied in ethanol solution at high specific activity.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• CDC/USDA permits for biological materials; maintain -20°C chain of custody; declare parent nuclide and activity accurately