4-Dimethylaminopyridine (DMAP) from Germany
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 — Germany → United States
18.5%
Rate breakdown
9903.04.628.5%Patented pharmaceutical articles that are the product of Japan, of a European Union member country, of South Korea, of Switzerland, or of Liechtenstein as provided for in subdivisions (c) and (f) of U.S. note 40 to this subchapter
9903.05.3910%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.97, articles the product of a member state of the European Union, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 10 percent, as provided for in U.S. note 52 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