4-Chloro-3-nitrobenzoic anhydride from United States
Symmetric anhydride of 4-chloro-3-nitrobenzoic acid for peptide coupling analogs. As a derivative of the specific acid, it classifies under this tariff item per the heading scope for anhydrides of aromatic monocarboxylic acids.
Duty Rate — United States → Canada
0%
Import Tips
• Confirm the anhydride structure with a certificate of analysis
• The CBSA may require the chemical name and CAS number
• Ensure the product is not put up for retail sale