1-Methylindole from Mexico
1-Methylindole is a modified aromatic indole derivative with a methyl group at the nitrogen position, falling under HTS 2933.99.0500 as a named aromatic heterocycle modification. Commonly used in organic synthesis for pharmaceuticals and as a fragrance intermediate.
Duty Rate — Mexico → 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
9903.05.5510%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
• Provide structural formula and NMR spectra if requested to distinguish from other indole isomers
• Classify based on principal characteristic group; methyl substitution doesn't change indole heading
• Watch for common pitfall of classifying as 'other heterocyclic' - specific indole derivatives stay here