Di-tert-butyl Dicarbonate (Boc2O) from Mexico
Di-tert-butyl dicarbonate (Boc anhydride) is a protecting agent for amines in peptide synthesis, classified under HTS 2942.00.50.00 as 'other' organic compounds. This mixed anhydride features carbonate and carboxylate functionalities.
Duty Rate — Mexico → United States
13.7%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Maintain storage below 25°C; include accelerated stability data for 6-month shelf life
• CAS 24424-99-5 and exact purity (>99%) must appear on all documentation
• Avoid classification confusion with pharmaceutical finished forms under Chapter 30