Methimazole Tablets API from China
Methimazole is an imidazole derivative antithyroid drug, a nitrogen heterocyclic compound specifically under HTS 2933.99.90.00 as a drug. It inhibits thyroid hormone synthesis and is imported as active pharmaceutical ingredient.
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
• Submit FDA IND or ANDA documentation for API import
• Ensure stability data for imidazole degradation during shipping
• Check for tapazole trademark issues affecting generic labeling