Glycosides — HTS 2938
Glycosides, natural or reproduced by synthesis, and their salts, ethers, esters and other derivatives
Chapter 29 › Heading 2938
2026 HTS Rev 19 Synced Rules verified Operational
Written to help non-specialists understand this page. Rates, dates, and legal facts come from the official records above and on the linked source.
HTS heading 2938 is a broad product category for glycosides and related compounds. Glycosides are chemical substances in which a sugar component is linked to another component; they may occur naturally or be made by synthesis. The heading also covers certain salts, ethers, esters, and other chemical derivatives of those glycosides.
The four-digit heading is only the starting point, not the final tariff classification. To reach the correct 8-digit HTSUS subheading, review the product’s exact chemical identity and the more specific descriptions under heading 2938. Those descriptions commonly distinguish products by named substance, chemical type, or whether the item is a salt or another derivative. Classification can depend on composition and presentation, so the product’s technical documentation should match the tariff wording.
What to check
- Obtain the exact chemical name, molecular formula, and identifying information from the supplier or manufacturer.
- Check whether the product is a natural glycoside, a synthetic glycoside, a salt, an ether, an ester, or another derivative.
- Read every 8-digit option under heading 2938 and match the product to the most specific description, rather than stopping at the four-digit heading.
- Compare the product’s composition and physical form with the HTSUS notes and applicable section or chapter notes.
- Ask a customs broker or request a binding classification ruling when the chemical identity, derivative status, or competing subheadings is unclear.
HTS heading 2938 summary
Glycosides is a 4-digit product category containing 2 published product-code lines in this snapshot. A heading does not carry one universal duty rate; classification must be narrowed to the line matching the product facts.
How to find your code in this category
A heading is a product category. To get the exact duty, narrow from this 4-digit heading to a sub-category (usually by material), then open the 8-digit code that matches your product.
Open any code in the tables below to see its exact duty rate, a duty calculator (enter your shipment value → estimated duty and landed cost), the rate-change history chart, and the country-by-country breakdown (including Section 301/232 add-on duties).
Why you have to click in: a single category can contain products with very different duties. The rate depends on the specific product — its material and construction — and on the country of origin, and those only get pinned down at the 8-digit code level. That is why this page points you to codes instead of showing one rate for the whole category.
Product codes & duty rates
👇 Each row is a specific product code — click a blue code to open its full page with exact duty rates by country, the rate-history chart, and a duty calculator. 👉
| Code | Description | General (MFN) | Special | Column 2 |
|---|---|---|---|---|
| 2938.10.00.00 👉 | Rutoside (Rutin) and its derivatives | 1.5% | Free | 10% |
| 2938.90.00.00 👉 | Other | 3.7% | Free | 50% |
"Special" shows the free-trade-agreement rate; open a code to see exactly which countries qualify.
Common questions
What products fall under HTS heading 2938?
Glycosides, natural or reproduced by synthesis, and their salts, ethers, esters and other derivatives. To classify a specific item you must pick the matching sub-category and 8-digit code above; the right choice usually depends on the material and construction of the product.
How do I choose the right code within this category?
Start from the sub-categories (typically divided by material—for example cotton versus man-made fibers), then open the active 8- or 10-digit code that matches the product. When unsure, a licensed customs broker or a CBP binding ruling can confirm the classification.
Reference information only, not customs, legal, or classification advice. Confirm the current code and rate against the official HTS before you import.