Metrizoic Acid from Japan
Metrizoic acid, or 3-acetamido-2,4,6-triiodo-5-(N-methylacetamido)benzoic acid, serves as a precursor for water-soluble contrast agents in medical imaging. It is specifically named in HTS 2924.29.0500 for its aromatic cyclic amide structure under carboxyamide-function compounds. This pure organic compound aligns with chapter notes for separate chemically defined substances.
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 TSCA certification for US entry and detailed purity assays; common issue is misdeclaration as a hormone per note 2937
• Partner with specialized chemical freight forwarders