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Trifluridine Pure Substance from China

Trifluridine is a fluorinated pyrimidine nucleoside used as an antiviral agent in ophthalmic solutions. Classifies under HTS 2933.59.59.00 for pyrimidine ring drugs not elsewhere specified. Chapter notes confirm nitrogen hetero-atom priority.

Duty Rate — China → United States

16.2%

Rate breakdown

9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China

Import Tips

Optical purity certificate essential for chiral pyrimidine derivatives

Temperature-controlled shipping manifests prevent degradation claims

Distinguish from trifluridine sodium salt which may classify differently