CompoundList
Sign in
Herbicides

Fenuron

Also known as 1,1-Dimethyl-3-phenylurea, Falisilvan, Dybar

CAS 101-42-8Formula C9H12N2OMolar mass 164.21 g/molEC 202-941-4
GHS signal word: Warning. Pictograms: Harmful or irritant, Serious health hazard, Hazardous to the environment 12 suppliers listed
Get quotes Compare 12 suppliers
Fenuron chemical structure, C9H12N2O, CAS 101-42-8
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
White, crystalline solid
Melting point
133 to 134
Density
1.08 at 20 °C/20 °C
Solubility
Sol in water 4.8 g/l at room temperature. Moderately sol in acetone and aromatic solvent…
HS code
292421
Category
Herbicides
Illustrative photo, colourless crystals in an open woven sack in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Fenuron?

Plain description, key identifiers and synonyms

Fenuron is a member of the class of 3-(3,4-substituted-phenyl)-1,1-dimethylureas that is urea in which one of the nitrogens is substituted by a phenyl group while the other is substituted by two methyl groups. It is a herbicide used for the control of weeds in beetroot as well as various vegetable and ornamental crops. It has a role as a herbicide, a photosystem-II inhibitor, an agrochemical, a xenobiotic and an environmental contaminant.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
1,1-dimethyl-3-phenylurea
CAS number
101-42-8 CAS number cross-checked
EC number
202-941-4
Molecular formula
C9H12N2O
UNII
O7L040435W
MDL number
MFCD00025662
InChIKey
XXOYNJXVWVNOOJ-UHFFFAOYSA-N
InChI
InChI=1S/C9H12N2O/c1-11(2)9(12)10-8-6-4-3-5-7-8/h3-7H,1-2H3,(H,10,12)
SMILES (canonical and isomeric)
CN(C)C(=O)NC1=CC=CC=C1

Synonyms

  • 1,1-Dimethyl-3-phenylurea
  • Falisilvan
  • Dybar
  • Dibar
  • N,N-Dimethyl-N'-phenylurea
  • Fenidin
  • Urea, N,N-dimethyl-N'-phenyl-
  • Amicure UR
  • Quintex
  • Omicure 94
  • 3-Phenyl-1,1-dimethylurea
  • Croptex Chrome
  • Herbon Yellow
  • Croptex Ruby
  • N-Phenyl-N',N'-dimethylurea
  • PUD (herbicide)
  • 1-Phenyl-3,3-dimethylurea
  • Fikure 62U
  • Dyhard RU 300
  • Dyhard UR 300
  • 3,3-dimethyl-1-phenylurea
  • Urea, 1,1-dimethyl-3-phenyl-
  • 1,1-dimethyl-3-phenyl-urea
  • PUD
  • (dimethylamino)-N-benzamide
Show all 33 synonyms
  • PDU
  • Fenulon
  • 1,1-Dimethyl-3-phenylurea, analytical standard
  • Fenidim
  • Dozer
  • N-phenyl-N',N'-dimethyl urea
  • Fenuron 10 |Ig/mL in Acetonitrile
  • N,N-Dimethyl-N'-phenylurea compound

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Appearance
White, crystalline solidexp.
Melting point
133 to 134exp.
Density
1.08 at 20 °C/20 °Cexp.
Solubility
Sol in water 4.8 g/l at room temperature. Moderately sol in acetone and aromatic solvents. sparingly soluble in petroleum oils. /Fenuron trichloroacetate/exp.
Vapour pressure
1.6 × 10⁻⁴ mm Hg at 60 °Cexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
164.21 g/molcalc.
Exact mass
164.095 Dacalc.
LogP (octanol/water)
1.78calc.
Topological polar surface area
32.34 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
1calc.
Heavy atoms
12calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.22calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, c1ccccc1

c1ccccc1

1 ring, 6 atoms, the Benzene ring system.

485,677 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant
GHS08: Serious health hazard
Serious health hazard
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
  • H361Suspected of damaging fertility or the unborn child.
  • H400Very toxic to aquatic life.
  • H410Very toxic to aquatic life with long lasting effects.
  • H411Toxic to aquatic life with long lasting effects.
Precautionary statements (15)
  • P203Obtain, read and follow all safety instructions before use.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P271Use only outdoors or in a well-ventilated area.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P318If exposed or concerned, get medical advice.
  • P319Get medical help if you feel unwell.
  • P337 + P317If eye irritation persists: Get medical help.
  • P391Collect spillage.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Fenuron suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 12 suppliers
12 of 12 offers

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

12 suppliers in 4 countries

Send one request to many suppliers

Choose up to 10 suppliers or let us match your request. Compare quotes side by side, free.

Choose suppliersPost a request

Fenuron price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

Get latest price

Uses and applications

What the substance is used for, by industry and function

Weed and brush killer.

Herbicide.

Control of woody plants and deep rooted perennial weeds, particularly on non crop land. Often used in combination with chloropropham to extend the weed spectrum and range of crops.

Industrial uses: Catalyst, Adhesion/cohesion promoter.

Consumer uses: Adhesion/cohesion promoter.

Roles

  • agrochemical
  • electron-transport chain inhibitor
  • environmental contaminant
  • enzyme inhibitor
  • herbicide
  • pathway inhibitor
  • pesticide
  • photosynthetic electron-transport chain inhibitor
  • photosystem-II inhibitor
  • xenobiotic

Functional uses

  • Biocide
  • Catalyst
  • Chemical reaction regulator
  • Hardener

Regulatory status

Inventories, regulations and trade controls that list this substance

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Fenuron is traded under.

HS 2924.21Indicative HS code

Ureines and their derivatives, salts thereof

World exports in 2024
$149M
+12.5% vs 2023, imports $208M
2019 to 2024
Top exporters
  1. Germany25.4%
  2. China14.4%
  3. Israel12.0%
Top importers
  1. Brazil28.2%
  2. United States14.0%
  3. Japan10.0%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Fenuron is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Fenuron, based on the data on this page

What is Fenuron?

Fenuron is a member of the class of 3-(3,4-substituted-phenyl)-1,1-dimethylureas that is urea in which one of the nitrogens is substituted by a phenyl group while the other is substituted by two methyl groups. It is a herbicide used for the control of weeds in beetroot as well as various vegetable and ornamental crops.

What is the CAS number of Fenuron?

The CAS registry number of Fenuron is 101-42-8.

What is the molecular formula and weight of Fenuron?

The molecular formula of Fenuron is C9H12N2O and its molar mass is 164.21 g/mol.

What is Fenuron used for?

Weed and brush killer. Herbicide. Control of woody plants and deep rooted perennial weeds, particularly on non crop land. Often used in combination with chloropropham to extend the weed spectrum and range of crops. Industrial uses: Catalyst, Adhesion/cohesion promoter. Consumer uses: Adhesion/cohesion promoter.

Is Fenuron hazardous?

Fenuron carries the GHS signal word "Warning". Main hazards: causes serious eye irritation, may cause respiratory irritation, suspected of damaging fertility or the unborn child. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Fenuron?

Fenuron is usually classified under HS code 292421 (Ureines and their derivatives, salts thereof). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Fenuron?

CompoundList lists 12 suppliers of Fenuron in China, United States, Hong Kong and Ukraine. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Fenuron?

Suppliers quote Fenuron on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Fenuron

Get quotes for Fenuron

Post one free request with your grade, quantity and destination. Matching suppliers send quotes you can compare side by side.
Post a request Sell Fenuron
Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
Embed this structure on your websiteShow code

Paste this code into your page to show the 2D structure of Fenuron with a 3D view, its CAS number and a link back to this page. Free to use with the link kept.

<iframe src="https://www.compoundlist.com/embed/structure/fenuron-101-42-8" title="Fenuron structure on CompoundList" width="360" height="420" style="border:1px solid #E7E2DA;border-radius:12px;max-width:100%" loading="lazy" referrerpolicy="strict-origin-when-cross-origin"></iframe>
Preview the embed

Explore more in Herbicides or HS code 292421

12 suppliers
Free quotes, contact stays private
Get quotes