Acetohydroxamic Acid from Mexico
Acetohydroxamic acid is a synthetic organic derivative of hydroxylamine used primarily as a pharmaceutical intermediate and urolithiasis treatment agent. It falls under HTS 2928.00.50.00 as an 'other' organic derivative of hydroxylamine, being a chemically defined compound not covered by more specific subheadings. This classification aligns with Chapter 29 notes for separate chemically defined organic compounds.
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
• Verify purity levels and provide Certificates of Analysis (CoA) to confirm chemical identity; ensure pharmaceutical-grade documentation if for drug use; avoid misclassification as quaternary ammonium compounds by confirming hydroxylamine structure