Sulfapyridine Base from Mexico
Sulfapyridine is a historic sulfonamide antibiotic still used in dermatological treatments like dermatitis herpetiformis. Falls under HTS 2935.90.4800 as a chemically defined sulfonamide anti-infective agent per Chapter 29(a). Its continued pharmacological use maintains drug classification despite age.
Duty Rate — Mexico → United States
16.5%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Provide current pharmacological literature confirming ongoing anti-infective indications to avoid 'other' classification
• Ensure GMP manufacturing certification; legacy drugs face heightened scrutiny for quality control
• Document absence of heavy metal impurities common in older synthesis routes