Burgess Reagent from China
Burgess reagent (methyl N-(triethylammoniumsulfonyl)carbamate) is used for alkene-forming eliminations, classified under HTS 2942.00.50.00. This inner salt features sulfonamide and carbamate functionalities.
Duty Rate — China → United States
28.7%
Rate breakdown
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
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
• Hygroscopic zwitterion; ship in sealed ampoules with humidity indicators
• Decomposition >180°C; include E2 elimination mechanism literature references
• Avoid confusion with explosive sulfonium salts through NMR characterization