Methone (5,5-Dimethylhydantoin) from Mexico
Methone serves as an intermediate in pharmaceutical synthesis and polymer modification, featuring the core hydantoin structure. Falls under HTS 2933.21.00.00 per Chapter 29 classification for unfused imidazole ring compounds.
Duty Rate — Mexico → United States
16.5%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Include synthesis pathway documentation confirming hydantoin parent structure,REACH registration status for EU manufacturing intermediates,Purity certificate essential to distinguish from reaction mixtures