Phtalazinone from Mexico
Phthalazinone is a heterocyclic aromatic imide used in pharmaceutical research and dye chemistry. Falls under HTS 2925.19.42.00 as 'other' aromatic imide. Fused ring imide structure per heading 2925.
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
• Heterocycle ring system NMR confirmation; batch purity analysis; research chemical import permits if applicable