Riboflavin Tetrabutyrate
Riboflavin Tetrabutyrate, a lipophilic ester derivative of Riboflavin for specialized vitamin delivery systems. As an ester of Vitamin B2 used primarily as a vitamin, it is classified under tariff item 2936.23.00, following the parent vitamin's classification per Chapter 29 ester rules.
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 tetrabutyrate is combined with other vitamins or active ingredients.
Combinations are classified as intermixtures.
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
• Document that the ester is used primarily as a vitamin, not as a drug or other product
• Ensure the product is unmixed and not formulated for retail sale
• Keep records of the esterification process and intended use to support classification
Related Products under Tariff item 2936.23.00
Bulk Riboflavin for Infant Formula
Bulk Riboflavin (Vitamin B2) in pharmaceutical or FCC grade, intended for fortifying infant formula. It is a chemically defined, unmixed vitamin supplied in bulk for later incorporation into food products, which keeps it in Chapter 29 rather than in food preparations.
Flavin Mononucleotide (FMN)
Flavin Mononucleotide (FMN), a phosphorylated derivative of Riboflavin used primarily as Vitamin B2 in nutritional and biochemical applications. It is a chemically defined derivative of Vitamin B2, falling under the tariff item for Vitamin B2 and its derivatives.
Food Grade Riboflavin Powder
Food-grade Riboflavin powder (FCC grade) used to fortify cereals, beverages, and infant formula. As a synthetic, chemically defined vitamin supplied in bulk, it is classified as an unmixed vitamin under tariff item 2936.23.00, not as a food additive preparation.
High-Purity Riboflavin for Fermentation Media
High-purity Riboflavin for use in fermentation media and biotech production. Despite its industrial end-use, it remains a synthetic, chemically defined vitamin used primarily as Vitamin B2, and is classified under tariff item 2936.23.00.
Microencapsulated Riboflavin
Microencapsulated Riboflavin, where the vitamin is coated for controlled release in supplements. The encapsulation acts as a stabilizer or protective agent, and the product remains a Vitamin B2 derivative under tariff item 2936.23.00, provided the coating does not make it suitable for a specific use other than as a vitamin.
Pharma Grade Riboflavin Granules
Pharma-grade Riboflavin granules (USP) for direct compression in tablet manufacturing. The physical form (granules) does not affect the classification as an unmixed Vitamin B2 under tariff item 2936.23.00.