Isoquinoline from Mexico
Isoquinoline is a heterocyclic compound featuring an isoquinoline ring system, explicitly named in HTS 2933.49.15.00. It is widely used as a building block in synthesizing pharmaceuticals like papaverine and berberine alkaloids.
Duty Rate — Mexico → United States
15.8%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Include NMR or GC-MS spectra in documentation to confirm isoquinoline identity
• Label containers with UN number if hazardous; check flash point requirements
• Verify not excluded under chapter notes as a coloring matter derivative