Protopine
Protopine is an allocryptopine alkaloid found in opium poppy and other plants such as Corydalis species. It has sedative and anti-inflammatory properties and is used in research and traditional medicine. As a vegetal-origin alkaloid not more specifically classified, it falls under tariff item 2939.79.00.
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 imported as a crude plant extract containing protopine
Vegetable extracts not chemically defined fall under Chapter 13.
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
• Confirm the botanical source and provide a certificate of analysis for the pure alkaloid
• Ensure the product is not derived from opium poppy varieties that are controlled substances, which may require special permits
• Verify the end use to ensure correct classification
Related Products under Tariff item 2939.79.00
Berberine Sulfate
Berberine sulfate is a salt of berberine, an isoquinoline alkaloid obtained from plants such as goldenseal and barberry. It is used in herbal supplements for its antimicrobial and anti-inflammatory properties. As a salt of a vegetal-origin alkaloid not more specifically classified elsewhere, it falls under tariff item 2939.79.00.
Boldine
Boldine is a natural aporphine alkaloid extracted from the leaves of the boldo tree (Peumus boldus). It is used as an antioxidant and choleretic agent in dietary supplements and research. Being a vegetal-origin alkaloid not covered by a more specific subheading, it classifies under tariff item 2939.79.00.
Caffeine Anhydrous USP
Caffeine anhydrous is a purified natural alkaloid derived from coffee beans or tea leaves. It is widely used in beverages, dietary supplements, and pharmaceutical formulations. As a vegetal-origin alkaloid not listed under a more specific subheading, it falls under tariff item 2939.79.00.
Chelerythrine Chloride
Chelerythrine chloride is a salt of chelerythrine, a benzophenanthridine alkaloid found in greater celandine (Chelidonium majus). It is used in research as a protein kinase C inhibitor. As a salt of a vegetal-origin alkaloid not more specifically classified, it falls under tariff item 2939.79.00.
Cryptolepine Hydrochloride
Cryptolepine hydrochloride is a salt of cryptolepine, an indoloquinoline alkaloid from Cryptolepis sanguinolenta, a plant used in traditional African medicine. It is studied for antimalarial and antimicrobial properties. As a salt of a vegetal-origin alkaloid, it classifies under tariff item 2939.79.00.
Evodiamine
Evodiamine is a quinolone alkaloid extracted from the fruit of Evodia rutaecarpa, a plant used in traditional Chinese medicine. It is used in weight loss supplements for its thermogenic effects. As a vegetal-origin alkaloid not more specifically classified, it falls under tariff item 2939.79.00.