Methimazole USP from China
Methimazole is an organo-sulfur antithyroid drug containing thiazole ring with direct S-C bonds, used for hyperthyroidism. As an organo-sulfur heterocyclic compound, it properly falls under heading 2930. Specified in the pharmaceutical drugs subheading 2930.90.92.35.
Duty Rate — China → United States
3.7%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Thyroid hormone interaction data required for FDA therapeutic classification support
• Ensure agranulocytosis warnings in SDS for safety compliance
• Avoid over-dilution that could trigger solvent solution reclassification per Chapter note 1(e)