Hydantoin from Mexico
Hydantoin is a five-membered heterocyclic cyclic amide used in pharmaceutical synthesis and personal care formulations. HTS 2924.29.95.00 applies as unspecified cyclic amide derivative. Key intermediate for anticonvulsants like phenytoin.
Duty Rate — Mexico → United States
110%
Rate breakdown
9903.04.6093.5%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Cosmetic grade requires safety assessment; declare substitution level if N-alkylated; DMF for pharma use