4-Dimethylaminopyridine (DMAP) from Canada
4-Dimethylaminopyridine (DMAP) is a pyridine catalyst with an unfused ring, widely used in organic synthesis for acyl transfer reactions. HTS 2933.39.61 applies via additional U.S. note 3 to section VI for listed pyridine derivatives. Essential lab reagent for peptide manufacturing.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Provide peer-reviewed references confirming catalytic use to avoid reagent misclassification
• Small package quantities (<1kg) may qualify for de minimis entry; aggregate carefully
• Include GHS labels meeting OSHA HazCom standards on all containers