Imidazole from Japan
Imidazole is a five-membered heterocyclic ring containing two nitrogen atoms, fundamental to histidine and many pharmaceuticals. HTS 2934.99.90.01 includes it as other heterocyclic compounds.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Provide histidine equivalence data if used in nutritional supplements
• Use low-temperature shipping to prevent sublimation losses
• Verify no histidine contamination which changes biochemical classification