High-Purity Trityl Chloride for Oligonucleotide Production from China
High-purity trityl chloride, also known as triphenylmethyl chloride, is specially purified for use in oligonucleotide production where it attaches dimethoxytrityl (DMT) groups. As a separate chemically defined halogenated derivative of an aromatic hydrocarbon, it falls under tariff item 2903.99.00.
Duty Rate — China → Canada
0%
Import Tips
• Maintain documentation showing the product is a separate chemically defined compound, not a mixture
• If the product is in solution, confirm the solvent is only for safety or transport
• Ensure the purity level is clearly stated on shipping documents to support classification