Benzoyl Ureine Derivative BU-19 from Mexico
BU-19 is a benzoyl-substituted aromatic ureine used in dye intermediate production, chemically defined cyclic amide. HTS 2924.21.4500 for 'other' aromatic ureines; excludes azo dye diluents per note (h).
Duty Rate — Mexico → United States
16.5%
Rate breakdown
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
• UV-Vis spectrum proves chromophore for CBP chemistry review
• Not for retail; bulk only to avoid Chapter 32/38 retail exclusions
• Purity threshold 95%; impurities may shift to mixture headings