High Purity 3-Methyl-5-Pyrazolone 99.5% from Canada
Ultra-high purity 3-Methyl-5-pyrazolone (99.5%) for advanced pharmaceutical synthesis is classified under HTS 2933.19.70.00. This specification confirms its status as a separate chemically defined organic compound with pyrazole ring per Chapter 29.
Duty Rate — Canada → 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
• Require third-party assay certificates for purity claims above 99%
• Ship under proper temperature control if melting point considerations apply
• Avoid water-dissolved forms unless meeting Chapter 29 note (d) transport criteria