4-Nitroimidazole from Canada
4-Nitroimidazole serves as a synthetic intermediate for nitroimidazole antibiotics like metronidazole. Its unfused imidazole ring with nitro substitution places it under HTS 2933.29.90.00 as other nitrogen-heterocyclic compounds.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Declare nitro content and provide explosive classification test results (UN 1224 if applicable)
• Use UN-approved packaging for nitro compounds to comply with DOT hazardous materials regulations
• Verify no sulfonation present which would shift classification to different subheading