4-Aminopyridine from Germany
4-Aminopyridine is a pyridine derivative used as a potassium channel blocker in multiple sclerosis treatment (dalfampridine). It qualifies for HTS 2933.39.41.00 as a drug containing an unfused pyridine ring, meeting Chapter 29 criteria for nitrogen-heterocyclic compounds. Pharmaceutical grade material supports neurological therapeutic applications.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
Import Tips
• Provide FDA Investigational New Drug (IND) documentation and synthetic route confirming pyridine structure
• Include stability data showing no degradation to non-heterocyclic amines during transport
• Declare as bulk API only; formulated products go to Chapter 30