2-(4-Amino Phenyl)-6-Methyl Benzothiazole-7-Sulfonic Acid from Canada
Sulfonated benzothiazole derivative specifically listed under HTS 2934.20.25.00 containing amino phenyl substitution and sulfonic acid functionality. Used in azo dye coupling and pharmaceutical intermediate applications. Meets Chapter 29 definition for chemically defined heterocyclic compounds.
Duty Rate — Canada → United States
10%
Rate breakdown
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
• Include NMR/HPLC spectra confirming sulfonic acid position and aromatic substitution pattern
• Label as 'technical grade' vs 'USP grade' affects documentation; pharma intermediates require GMP certs
• Sulfonic acid content must be declared; sodium salt form may require reclassification review