3-Methyl-5-Pyrazolone Flake Form from Mexico
3-Methyl-5-pyrazolone in flake form for easier handling in pharmaceutical intermediate production falls under HTS 2933.19.70.00. Its classification stems from the core unfused pyrazole ring meeting Chapter 29 note requirements for pure heterocyclic compounds.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Use anti-caking stabilized packaging only if necessary for transport per Chapter 29 note (f)
• Include NMR spectral data if requested to confirm pyrazole ring integrity
• Register with US EPA if used in pesticide intermediates to avoid delays