Methylphosphonyl bromide from China
Methylphosphonyl bromide (CH3P(O)Br2) features phosphorus bonded to a single methyl group and two bromines, precisely matching HTS 2931.59.00.60 structural specifications. This compound serves as a phosphorylating agent in nucleotide synthesis.
Duty Rate — China → United States
16.2%
Rate breakdown
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 to this subchapter
Import Tips
• Biotech intermediates require additional CBP biotech import permits beyond standard chemical clearance
• Declare CAS number 676-97-1 explicitly on commercial invoice for automated customs processing
• Use nitrogen-purged containers to prevent moisture-induced decomposition during storage