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Aromatic Arsenic Drug Triphenylarsine Oxide from Japan

Triphenylarsine oxide is an aromatic organo-arsenic compound used as an intermediate in pharmaceutical synthesis for anti-cancer drugs. It falls under HTS 2931.90.22.00 as an aromatic organo-inorganic drug containing arsenic directly linked to carbon, meeting Chapter 29 requirements for chemically defined 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 detailed chemical analysis and CAS number to confirm arsenic-carbon linkage for Chapter 29 classification

Include FDA import alerts documentation for arsenic-containing pharmaceuticals to avoid detention

Verify 'drug' status with therapeutic use evidence to distinguish from non-drug organo-inorganics