Levorphanol (S)-Tartrate Dihydrate
Levorphanol (S)-tartrate dihydrate is a crystalline salt of levorphanol with tartaric acid, containing water of crystallization. The hydrated form does not change the chemical identity of the salt, so it remains classified as a salt of levorphanol (INN) under this tariff item.
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 |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the salt is not derived from levorphanol specifically
Other isoquinoline derivatives not further fused are classified in this residual 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
• Confirm that the dihydrate form is listed on the import permit, as variations in hydration may require additional documentation
• Provide the certificate of analysis showing the salt identity and water content
• Check with CBSA whether the product qualifies for duty relief under a controlled substances program
Related Products under Tariff item 2933.41.00
Levorphanol Hydrochloride
Levorphanol hydrochloride is the hydrochloride salt of levorphanol, a synthetic opioid analgesic. It retains the isoquinoline ring-system characteristic of the base compound and is classified under this tariff item as a salt of levorphanol (INN).
Levorphanol Sulfate
Levorphanol sulfate is the sulfate salt of levorphanol, a synthetic opioid with an isoquinoline ring-system. As a salt of levorphanol (INN), it is covered by this tariff item, which includes both the base compound and its salts.
Levorphanol Tartrate
Levorphanol tartrate is the tartrate salt of levorphanol, a potent opioid agonist with an isoquinoline ring-system. This tariff item covers levorphanol (INN) and its salts, including the tartrate form, regardless of the acid used for salt formation.
Pharmaceutical Grade Levorphanol Base
Pharmaceutical grade levorphanol base is the pure form of levorphanol (INN), a morphinan opioid with an isoquinoline ring-system. This tariff item explicitly covers levorphanol (INN) itself, so the base compound is classified here even when imported for subsequent salt formation.