1,8-Naphthyridine from Canada
1,8-Naphthyridine is a rigid bicyclic heterocyclic compound with nitrogen atoms at positions 1 and 8, used in metal coordination chemistry. Falls under HTS 2934.99.90.01 as other heterocyclic nitrogen compounds not elsewhere specified.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Declare molecular formula C8H6N2 precisely to match tariff description
• Include stability data showing no explosive peroxides formation
• Pre-clear with CBP chemistry lab if novel structure raises classification questions