O-Ethyl O-(4-nitrophenyl) phosphorothioate from Mexico
Nitrosated aromatic thiophosphoric ester used in pharmaceutical intermediate synthesis and as analytical reagent. Classified HTS 2920.19.40.00 due to nitro-substituted phenyl ring on phosphorodithioate core. Chapter notes explicitly include nitrated derivatives in this heading.
Duty Rate — Mexico → United States
16.5%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Nitro compounds require additional ATF export license verification; include GHS hazard pictograms on labels; test for peroxide formation stability before shipment