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2920.21.00.00/High Assay Dimethyl Phosphite 99.5%/Mexico

High Assay Dimethyl Phosphite 99.5% from Mexico

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 — Mexico → United States

13.7%

Rate breakdown

9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
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Import Tips

• Provide GMP-equivalent CoA for FDA-impacted imports; nitrogen purge packaging mandatory; avoid temperature >40°C in shipping