High Assay Dimethyl Phosphite 99.5% from Japan
Ultra-high purity 99.5% dimethyl phosphite for pharmaceutical intermediates falls under HTS 2920.21.00.00 as a chemically defined phosphite ester. Its precision purity supports sensitive reactions.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide GMP-equivalent CoA for FDA-impacted imports; nitrogen purge packaging mandatory; avoid temperature >40°C in shipping