N-(2,6-Dichloro-3-methylphenyl)-5-amino-1,3,4-triazole-2-sulfonamide from Canada
This complex triazole-sulfonamide is a herbicide development intermediate specifically named in HTS 2935.90.13.00. Used in synthesis of experimental sulfonylurea herbicides with enhanced crop selectivity. Research quantities typically imported for agrochemical R&D.
Duty Rate — Canada → United States
110%
Rate breakdown
9903.04.60100%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
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• EPA Experimental Use Permit (EUP) required for field testing quantities >10 acres
• Structure confirmation via 1H-NMR and 13C-NMR mandatory for R&D imports
• Small scale exemption (<2.5 acres) from full registration requirements