Mesna USP from Japan
Mesna is an organo-sulfur compound used as a cytoprotective agent during chemotherapy to prevent hemorrhagic cystitis. Its mercaptoethane sulfonate structure has sulfur directly linked to carbon atoms per heading 2930 definition. Classified as a pharmaceutical drug in 2930.90.92.35.
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
• Include clinical trial data references if for investigational use to expedite FDA clearance
• Specify pH stability range in COA as it's critical for classification integrity
• Prevent reclassification by documenting exclusion from Chapter 38 fire-extinguisher chemicals