Sulfapyridine from Japan
Sulfapyridine, one of the earliest synthetic sulfonamides, is used in dermatological treatments particularly for dermatitis herpetiformis and as a component in dapsone alternatives. HTS 2935.90.60.00 applies as a classic sulfonamide drug structure with pharmaceutical applications. It exemplifies the chemically defined organic compounds covered by Chapter 29 heading 2935.
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 clinical indication documentation as niche therapeutic use may trigger additional FDA scrutiny
• Ensure proper polymorphic form certification as sulfapyridine exhibits multiple crystal forms affecting bioavailability
• Declare exact CAS number (144-83-2) on commercial invoice for accurate HTS verification