O-Ethyl O-(4-nitrophenyl) phosphorothioate from Mexico
O-Ethyl O-(4-nitrophenyl) phosphorothioate is a nitrosated aromatic thiophosphoric ester used in pharmaceutical intermediate synthesis and as an analytical reagent. As a separate chemically defined compound, it falls under this tariff item for other thiophosphoric esters.
Duty Rate — Mexico → Canada
0%
Import Tips
• Ensure the product is a separate chemically defined compound per Chapter 29 Note 1(a)
• Provide the chemical structure and purity data to CBSA
• Check if the pharmaceutical use requires any Health Canada approvals