2933.99.82/Isoquinoline Base/Japan

Isoquinoline Base from Japan

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 — 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%

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Import Tips

• Odor declaration for perfumery end-use; distillation purity certificates; REACH Annex XVII compliance