Imidazole Pharmaceutical Grade from China
Imidazole (1H-imidazole), a five-membered nitrogen heterocyclic ring compound used as pharmaceutical intermediate and antifungal agent. HTS 2933.99.9701 covers this azole heterocycle with nitrogen hetero-atoms only, not specified elsewhere.
Duty Rate — China → United States
6.5%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Require NMR/GC certificate proving unsubstituted structure; derivatives go to 2933.29
• Pharma imports need DMF filing; avoid bulk packaging mistaken for industrial chemical
• Anti-caking agents allowed per note (f) but must document transport necessity