Bulk Trimethoprim Base Crystals from United States
Bulk trimethoprim base crystals are a pure free base form of trimethoprim, an antibiotic used in pharmaceutical compounding. Its structure contains a pyrimidine ring, classifying it under tariff item 2933.59.00 for heterocyclic compounds with nitrogen hetero-atoms. The product is a separate chemically defined organic compound, meeting Chapter 29 criteria.
Duty Rate — United States → Canada
0%
Import Tips
• Ensure the product is in bulk crystalline form, not formulated for retail sale, to qualify under Chapter 29
• Provide a certificate of analysis confirming the pyrimidine ring and free base form
• Verify if the product requires a Drug Establishment Licence (DEL) for pharmaceutical use