Phenylphosphine Gold Drug Auranofin Intermediate from Japan
Auranofin intermediate featuring aromatic phosphine coordinated with gold, used in rheumatoid arthritis treatment. Falls under HTS 2931.90.22.00 as an aromatic organo-inorganic drug with phosphorus and metal directly linked to aromatic carbon.
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 coordination chemistry analysis showing metal-carbon linkages through Chapter 29 note 3(C)(3)
• Include DEA/FDA precursor documentation if used in controlled substance synthesis
• Label with GHS hazard symbols for organometallic toxicity during customs clearance