N-Methylphenazone from Japan
N-Methylphenazone is a simple N-alkylated derivative used in organic synthesis and as a pharmaceutical intermediate. Falls under HTS 2933.11.00.00 as a phenazone derivative with unfused pyrazole ring per heading specification. High-purity grade for research applications.
Duty Rate — Japan → United States
21%
Rate breakdown
9903.04.628.5%Patented pharmaceutical articles that are the product of Japan, of a European Union member country, of South Korea, of Switzerland, or of Liechtenstein as provided for in subdivisions (c) and (f) of U.S. note 40 to this subchapter
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide synthetic route documentation tracing to phenazone; HPLC purity >98% required; DOT hazard class 6.1 for poison transport