New

Ask Wove anything about tariffs.

Try Tariff Assistant

Phenobarbital USP

Phenobarbital is a barbituric acid derivative used as an anticonvulsant and sedative. It is a derivative of malonylurea with a pyrimidine ring, falling under tariff item 2933.54.00.

Import Duty Rates by Country of Origin

Origin CountryMFN TariffSurtaxesTotal Effective Rate
🇨🇳ChinaFree—Free
🇲🇽MexicoFree—Free
🇺🇸United StatesFree—Free
🇩🇪GermanyFree—Free
🇯🇵JapanFree—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.

2933.59.00Same rate: Free

If the compound is not a malonylurea derivative

Other pyrimidine-ring compounds.

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 product is a separate chemically defined compound

• Check if a controlled substance import permit is required

• Ensure the product is not mixed with other active ingredients, which could change classification