Sulfisoxazole Acetyl from Japan
Sulfisoxazole acetyl is the acetylated prodrug form of sulfisoxazole, a short-acting sulfonamide antibiotic effective against urinary tract infections. It qualifies under HTS 2935.90.4800 as a sulfonamide anti-infective per Chapter 29 structure, where the acetyl group doesn't alter primary sulfonamide classification. Used primarily in pediatric formulations.
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 hydrolysis studies demonstrating conversion to active sulfisoxazole for anti-infective classification justification
• Verify no Chapter 30 exclusions apply; must be bulk API, not formulated pediatric suspension