Aminophylline USP Powder from Mexico
Aminophylline is a heterocyclic compound containing a xanthine (purine) structure with pyrimidine rings, used as a bronchodilator for respiratory conditions. It falls under HTS 2933.59.80.00 as an aromatic heterocyclic compound with nitrogen hetero-atoms in pyrimidine rings, not elsewhere specified. Typically imported as a pharmaceutical-grade powder for compounding or manufacturing.
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
• Provide Certificate of Analysis (CoA) confirming purity and USP compliance to avoid FDA holds
• Declare as pharmaceutical intermediate; misclassification as finished drug risks Chapter 30 reclassification
• Ensure proper stability packaging to prevent degradation during transit, as required for heterocyclic APIs