Phenobarbital from Canada
Phenobarbital, a barbituric acid derivative, contains a pyrimidine ring with two nitrogen hetero-atoms, functioning as both anticonvulsant and sedative. Falls under HTS 2933.99.65.00 as an aromatic heterocyclic CNS drug. Long-acting barbiturate API imported in crystalline powder form.
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
• Schedule IV controlled substance; requires FDA 503B registration for bulk compounding
• Provide pKa and solubility data confirming barbituric acid structure
• Declare as 'not for injection' if powder form to avoid sterile product requirements