Isoquinoline Base from China
Isoquinoline is a fused benzene-pyridine isomer with nitrogen in the non-fused position of the heterocyclic ring. Falls under HTS 2933.99.82 as other aromatic nitrogen heterocycles for pharma and perfumery.
Duty Rate — China → United States
19%
Rate breakdown
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Odor declaration for perfumery end-use; distillation purity certificates; REACH Annex XVII compliance