Pyrazinamide Micronized Pharmaceutical Powder from Japan
Micronized pyrazinamide powder specifically listed under HTS 2933.99.4200 provides enhanced bioavailability for TB treatment formulations. Particle size reduction does not affect chemical classification as this named anti-infective heterocyclic drug. Imported for direct compression tablet production.
Duty Rate — Japan → United States
27.5%
Rate breakdown
9903.04.6215%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
• PSD (particle size distribution) analysis required to verify micronization doesn't create new chemical entity
• Higher bioavailability grade demands tighter impurity specs (<0.1% pyrazinoic acid)
• Direct compression grade needs flowability documentation for manufacturing validation