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
6.5%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Include NMR spectra verifying pyridine structure in documentation; hazardous material shipping papers required (UN 2811)
• Prevent reclassification as 'aromatic amine' under 2921