Myclobutanil Reference Standard from Mexico
High-purity Myclobutanil reference standard (α-Butyl-α-(4-chlorophenyl)-1H-1,2,4-triazole-1-propanenitrile) >99% for analytical labs, classified under HTS 2933.99.06.00 as a chemically defined heterocyclic compound. Used for HPLC calibration in pesticide residue testing. Meets chapter requirements for separate organic compounds.
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 Certificate of Analysis (CoA) confirming identity and purity
• Label as 'Reference Standard - Not for Sale' to avoid EPA end-use scrutiny
• Small package exemptions may apply for lab quantities under DE minimis