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2933.59.36.00/Trimethoprim/China

Trimethoprim from China

Trimethoprim is a dihydrofolate reductase inhibitor with a pyrimidine ring, used as an anti-infective for urinary tract and respiratory infections, often combined with sulfamethoxazole. It is classified in HTS 2933.59.36.00 as an aromatic anti-infective heterocyclic compound containing nitrogen hetero-atoms only. Meets chapter note (a) for separate chemically defined compounds.

Duty Rate — China → United States

19%

Rate breakdown

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

• Provide DEA documentation if controlled; ensure GMP certification for API; check for impurities to confirm chapter 29 applicability

Trimethoprim from China — Import Duty Rate | HTS 2933.59.36.00