Xanthine from Canada
Xanthine is a purine base and key intermediate in caffeine and theophylline biosynthesis. Classified under HTS 2934.99.44.00 as an aromatic heterocyclic compound. Pharmaceutical precursor for bronchodilators and stimulants.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• GMP certificate recommended for pharma intermediate import
• Solubility data required to distinguish from nucleic acid salts
• Monitor DEA precursor chemical regulations