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2933.39.92.00/4-Dimethylaminopyridine (DMAP)/Japan

4-Dimethylaminopyridine (DMAP) from Japan

DMAP is a pyridine derivative with a dimethylamino substituent at position 4, widely used as a catalyst in organic synthesis and peptide coupling reactions. It qualifies for HTS 2933.39.92.00 as an 'other' unfused pyridine compound with nitrogen hetero-atoms only, meeting Chapter 29 purity requirements. Common in pharmaceutical manufacturing.

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

• Include NMR spectra verifying pyridine structure in documentation; hazardous material shipping papers required (UN 2811)

• Prevent reclassification as 'aromatic amine' under 2921