Isoergosine from United States
Isoergosine is an isomer of ergosine from rye ergot, used in stereochemistry studies. It is a separate chemically defined organic compound, and per chapter note 1(b), mixtures of isomers of the same organic compound are covered. As a rye ergot alkaloid derivative, it falls under tariff item 2939.69.00 as 'Other'.
Duty Rate — United States → Canada
0%
Import Tips
• Clearly identify the product as isoergosine, an isomer of ergosine, and provide its chemical structure
• If the product is a mixture of isomers, ensure it meets the chapter note requirements
• Provide a Certificate of Analysis to support classification