Propyphenazone from China
Propyphenazone is an N-propyl derivative of phenazone used in combination analgesics. It qualifies for HTS 2933.11.00.00 as a direct phenazone derivative with the unfused pyrazole ring structure specified in the heading. Typically imported in crystalline powder form for drug formulation.
Duty Rate — China → United States
112.5%
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
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 to this subchapter
Import Tips
• Submit GC-MS analysis proving derivative relationship to phenazone; ensure GMP-compliant manufacturing certification; watch for EU REACH registration requirements