Fenuron

CAS 101-42-8

U.S. production volumes are classified as confidential business information.

US productionCBI

Confidential Business Information. The EPA withholds this volume because publishing it could reveal the reporting company's trade secrets.

Import value, 2024$28M

Top sourceIsrael 32%

At least one company claimed its 2023 production or import volume for this chemical as confidential, so EPA withholds it.

Why supply is unknown

Production is reported production, not a complete census of factories. US production volume is confidential. Production reporting year: 2023. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 292421 · basket

EPA reports by year

2023: US production Confidential · Imports Confidential
2019: US production Confidential · Imports Confidential

These shares come from HS customs code 292421, which covers 26 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries

Country of origin for US imports, from Census customs data (2024).

IL 32%IsraelCN 19%ChinaCH 11%SwitzerlandIN 11%IndiaDE 9%Germany

South Korea
Spain
Singapore
Ukraine
Italy
Poland
Hong Kong

EPA-registered manufacturers (1)

Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.

Cymer

Domestic parents -- activity not disclosed (1)

EPA records name a US company for this chemical but do not disclose whether the company made it here or imported it.

Huntsman

EPA-registered importers (1)

Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.

Alzchem

Why It Matters

Sectors

Core Chemicals

Downstream UsesNot recorded

FDA Shortage Status

Whether any manufacturer currently reports this drug as in shortage on the FDA Drug Shortages database. "Active Shortage" means at least one presentation has status "current."

No FDA shortage records

Industrial Uses

Used in 1 sector as 2 functional roles.

•Catalyst in All Other Chemical Product and Preparation Manufacturing (20%)Processing—incorporation into formulation, mixture, or reaction product
•Adhesion/cohesion promoter in All Other Chemical Product and Preparation Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$21.00/gCombi-Blocks, Inc.

CountryUnited States

Pack$210.00 / 10 g

Purity98%

Vendors9 available

Prices reflect listed pack sizes. Small research packs run far above bulk rates.

8 more vendors

Vendor	Country	$/g	Pack	Purity
A2B Chem LLC	United States	$22.80	10 g	98%
AA BLOCKS	United States	$24.00	10 g	98%
MedChemExpress MCE	Sweden	$28.80	5 g	97%
Labotest KG	Germany	$217.80	5000 mg	90%
Maybridge, Ltd.	United Kingdom	$2414.30	100 mg	90%
Otava, Ltd.	Ukraine	$2724.00	50 mg	90%
Princeton BioMolecular Research (SC)	United States	$5000.00	30 mg	90%
Vitas M Chemical Limited	Hong Kong	$5133.33	30 mg	90%

Chemical Identity

CAS101-42-8

PubChem CID7560

DTXSIDDTXSID7037551

FormulaC9H12N2O

Mol. Weight164.2 g/mol

SMILESCN(C)C(=O)NC1=CC=CC=C1

Data Sources

EPA CompTox (DSSTox) · DTXSID7037551Retrieved 2026-04-06
PubChem · compound 7560Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

Fenuron (CAS 101-42-8) https://chemicalindependence.com/chemical/101-42-8/ EPA CompTox (DSSTox): DTXSID7037551. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID7037551 PubChem: 7560. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/7560 EPA Chemical Data Reporting: 101-42-8. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 101-42-8. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 292421 for CAS 101-42-8. Reporting year: 2024. https://usatrade.census.gov/