Methimazole USP from Canada
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 — Canada → United States
13.7%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
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)