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HSChapter 29
U.S. imports of hydantoin (glycolylurea) and its derivatives (HS 293321) totaled $2.2M in April 2026, traded with 12 countries.
Importers of Hydantoin (Glycolylurea) and Its Derivatives paid $609K in duties in April 2026 — an effective duty rate of 28% on $2.2M in dutiable value, based on actual customs collections rather than the published tariff schedule. Hydantoin (Glycolylurea) and Its Derivatives imports of $2.2M in April 2026 ran 51% above the year-to-date monthly average of $1.5M.
Last updated: April 2026 dataHydantoin and its derivatives — classified entirely within the single US tariff line 2933210000 — are five-membered imidazolone-ring compounds with broad pharmaceutical and industrial applications, including anticonvulsant drugs (phenytoin being the most prominent derivative), antimicrobial agents, and chemical intermediates for personal care formulations. China is the leading US import source, followed by Israel and Taiwan, with Spain and India also supplying the market; Israel's presence reflects its established specialty pharmaceutical chemical sector. Derivatives intended for use as active pharmaceutical ingredients are subject to FDA cGMP requirements and foreign establishment registration. Admissibility and classification are complex; consult a licensed customs broker or the relevant agency before importing.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Yes — the US schedule does not subdivide hydantoin derivatives further at the 10-digit level, so all compounds in this series, from industrial-grade hydantoin used in personal care chemistry to pharmaceutical-grade intermediates for anticonvulsant synthesis, are classified under 2933210000. End-use determines the applicable regulatory regime (FDA for drug applications) but does not change the tariff classification.
Hydantoin derivatives originating in China may be subject to Section 301 tariffs applicable to Chapter 29 organic chemicals. Importers should check the current Section 301 product list and any active exclusions for this specific compound with a licensed customs broker, as the scope and exclusion status of chemical products under Section 301 can be updated periodically.
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Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| CHINA | $2.1M | $18K | -$2.0M |
| MEXICO | -- | $260K | +$260K |
| JAPAN | -- | $184K | +$184K |
| BELGIUM | -- | $167K | +$167K |
| UNITED KINGDOM | -- | $125K | +$125K |
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 2933210000 | HYDANTOIN AND ITS DERIVATIVES | $2.2M | 28.18% | $609K |
HYDANTOIN AND ITS DERIVATIVES
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2933210000 | HYDANTOIN (GLYCOLYLUREA) AND ITS DERIVATIVES | $971K |
HYDANTOIN (GLYCOLYLUREA) AND ITS DERIVATIVES
188.4K kg
NUCLEIC ACIDS & SALTS; OTHER HETEROCYCLIC CMP, NES
HS 293499
HETEROCYCLIC COMP W NITROGEN HETERO-ATM ONLY NESOI
HS 293399
POLYPEPTIDE PROTEIN& GLYCOPROTEIN HORMONES &DERIV
HS 293719
CMPDS CONT AN UNFUSED PYRIDINE RING ETC NESOI
HS 293339
COMP WITH PYRIMIDINE OR PIPERAZINE RING, NESOI
HS 293359
ANTIBIOTICS, NESOI
HS 294190
| State | Imports | Exports | Balance |
|---|---|---|---|
| Texas | $1.4M | -- | -$1.4M |
| New Jersey | $169K | $501K | +$332K |
| Georgia | $417K | $40K | -$377K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| LONG BEACH, CA | $1.2M | -- | -$1.2M |
| HOUSTON, TX | $611K | -- | -$611K |
| NEW YORK, NY | -- | $291K | +$291K |