Isoergosine
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'.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the isomer is not specifically derived from rye ergot
Other ergot alkaloid isomers may be classified under a different subheading.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• 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
Related Products under Tariff item 2939.69.00
Dihydroergotamine Mesylate
Dihydroergotamine mesylate is a hydrogenated derivative of ergotamine, an alkaloid naturally found in rye ergot. It is a separate chemically defined organic compound used primarily in pharmaceutical preparations for acute migraine treatment. As a salt of a rye ergot alkaloid, it falls under tariff item 2939.69.00 as 'Other' alkaloids of rye ergot and their derivatives.
Ergoclavine
Ergoclavine is a natural clavine-type alkaloid isolated from rye ergot fungi. It is a separate chemically defined organic compound with neuroactive properties, used in research and pharmaceutical development. As a rye ergot alkaloid not elsewhere specified, it is classified under tariff item 2939.69.00 as 'Other'.
Ergocornine Base
Ergocornine base is a natural rye ergot alkaloid isolated for pharmaceutical synthesis and neuropharmacology studies. It is a separate chemically defined organic compound in its base form, without salts or esters. This product falls under tariff item 2939.69.00 as 'Other' rye ergot alkaloids and their derivatives.
Ergocristine Phosphate
Ergocristine phosphate is a natural alkaloid extracted from rye ergot sclerotia, used in research and as a precursor for dopamine receptor agonists. As a salt of a rye ergot alkaloid, it is a separate chemically defined compound. It is classified under tariff item 2939.69.00 as 'Other' rye ergot alkaloid derivatives.
Ergocristinine
Ergocristinine is an isolysergic acid derivative from rye ergot, used in alkaloid research. It is a separate chemically defined organic compound, distinct from lysergic acid amides. As a derivative of rye ergot alkaloids, it falls under tariff item 2939.69.00 as 'Other'.
Ergometrine Maleate
Ergometrine maleate, also known as ergonovine maleate, is an ergot alkaloid derivative used to control postpartum hemorrhage. It is a salt of ergometrine, a rye ergot alkaloid, and is a separate chemically defined compound. This product is classified under tariff item 2939.69.00 as 'Other' rye ergot alkaloid salts.