Isoquinoline from Japan
Isoquinoline is a bicyclic aromatic heterocycle used in alkaloid synthesis and as a solvent in organic reactions. Classified under HTS 2934.99.44.00 as other aromatic heterocyclic. Precursor for papaverine and other isoquinoline alkaloids.
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
• CAS 119-65-3 and boiling point (243°C) data confirms identity
• Handle as flammable liquid per DOT regulations
• Purity >99% required for chemically defined classification