Isoquinoline from Japan
Isoquinoline is a heterocyclic aromatic organic compound with a benzene ring fused to a pyridine ring. It is imported under HTS 2934.99.90.01 as other heterocyclic compounds and used in alkaloid synthesis and as a corrosion inhibitor.
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 flash point data (108°C) for proper IMDG Class 6.1 hazardous material declaration
• Include end-use statement if for pharmaceutical synthesis to qualify for duty exemptions
• Test for pyridine content impurities which could trigger different classification