3-Cyanopyridine (Nicotinonitrile) from Mexico
3-Cyanopyridine contains both pyridine ring and nitrile group, used in vitamin B3 synthesis and herbicides. HTS 2933.39.92.00 as pyridine takes precedence over nitrile function per Chapter 29 classification rules. Chemically defined per chapter 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
• Nitrile hazard documentation; confirm >99% purity
• Synthetic route declaration may be requested