4-Dimethylaminopyridine (DMAP) from Mexico
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 — Mexico → United States
6.5%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
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