5-Methyl-2-Furfurylthiazolium Chloride from Mexico
This thiazolium salt used in asymmetric catalysis features a substituted thiazole ring with furfuryl group. Classifies under HTS 2934.10.90.00 as thiazole derivative salt remaining with parent heterocyclic compound per Chapter 29 salt classification notes.
Duty Rate — Mexico → United States
110%
Rate breakdown
9903.04.6093.5%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include organocatalyst application data and chiral induction efficiency
• Verify counterion (chloride) exchange does not affect classification
• Ship under temperature control if hygroscopic; include storage conditions