1-Phenyl-3-methyl-5-pyrazolone from Canada
1-Phenyl-3-methyl-5-pyrazolone is a pyrazolone derivative with unfused pyrazole ring structure, keto form at position 5, classified under HTS 2933.19.90.00. Used in dye synthesis, pharmaceutical intermediates, and as analytical reagent for metal detection.
Duty Rate — Canada → 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
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Specify dye intermediate vs. analytical reagent grade on invoice to guide classification
• Light-sensitive - recommend amber packaging and temperature control <30°C during shipping