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Fungicides

Pencycuron

Also known as Monceren, 1-(4-chlorobenzyl)-1-cyclopentyl-3-phenylurea, N-((4-Chlorophenyl)methyl)-N-cyclopentyl-N'-phenylurea

CAS 66063-05-6Formula C19H21ClN2OMolar mass 328.84 g/molEC 266-096-3
GHS signal word: Warning. Pictograms: Hazardous to the environment 12 suppliers listed
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Pencycuron chemical structure, C19H21ClN2O, CAS 66063-05-6
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
66063-05-6
Formula
C19H21ClN2O
Molar mass
328.84 g/mol
EC number
266-096-3
HS code
292421
Category
Fungicides

What is Pencycuron?

Plain description, key identifiers and synonyms

Pencycuron is a member of the class of phenylureas that is urea which is substituted by p-chlorobenzyl and cyclopentyl groups at position 1 and a phenyl group at position 3. A fungicide used to control diseases caused by Rhizoctonia solani and Pellicularia spp. It is not highly toxic to mammals but is moderately toxic to birds, most aquatic organisms, honeybees and earthworms. It has a role as an antifungal agrochemical. It is a member of phenylureas and a member of monochlorobenzenes. It is functionally related to an aniline.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
1-[(4-chlorophenyl)methyl]-1-cyclopentyl-3-phenylurea
CAS number
66063-05-6 CAS number cross-checked
EC number
266-096-3
Molecular formula
C19H21ClN2O
UNII
GCH2G449HP
MDL number
MFCD00078724
InChIKey
OGYFATSSENRIKG-UHFFFAOYSA-N
InChI
InChI=1S/C19H21ClN2O/c20-16-12-10-15(11-13-16)14-22(18-8-4-5-9-18)19(23)21-17-6-2-1-3-7-17/h1-3,6-7,10-13,18H,4-5,8-9,14H2,(H,21,23)
SMILES (canonical and isomeric)
C1CCC(C1)N(CC2=CC=C(C=C2)Cl)C(=O)NC3=CC=CC=C3

Synonyms

  • Monceren
  • 1-(4-chlorobenzyl)-1-cyclopentyl-3-phenylurea
  • N-((4-Chlorophenyl)methyl)-N-cyclopentyl-N'-phenylurea
  • 1-(p-Chlorobenzyl)-1-cyclopentyl-3-phenylurea
  • Monceraen 250sc
  • Urea, N-((4-chlorophenyl)methyl)-N-cyclopentyl-N'-phenyl-
  • 1-[(4-chlorophenyl)methyl]-1-cyclopentyl-3-phenyl-urea
  • Urea, N-[(4-chlorophenyl)methyl]-N-cyclopentyl-N'-phenyl-
  • 1-((4-chlorophenyl)methyl)-1-cyclopentyl-3-phenyl-urea
  • N-[(4-Chlorophenyl)methyl]-N-cyclopentyl-N'-phenylurea
  • BAY ntn 19701
  • 1-[(4-chlorophenyl)methyl]-1-cyclopentyl-3-phenylurea
  • 1-((4-Chlorophenyl)methyl)-1-cyclopentyl-3-phenylurea
  • [(Chlorophenyl)-methyl]-N-cyclopentyl-N'-phenylurea
  • NTN 19701
  • Trotis
  • Pencycuron 50 microg/mL in Acetonitrile
  • N-4-chlorobenzyl-N-cyclopentyl-N'-phenylurea
  • Pencycuron, PESTANAL(R), analytical standard
  • N-(4-Chlorobenzyl)-N-cyclopentyl-N'-phenylurea #

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

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

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
328.84 g/molcalc.
Exact mass
328.1342 Dacalc.
LogP (octanol/water)
5.32calc.
Topological polar surface area
32.34 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
4calc.
Heavy atoms
23calc.
Rings
3calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0.32calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (1 violation)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, O=C(Nc1ccccc1)N(Cc1ccccc1)C1CCCC1

O=C(Nc1ccccc1)N(Cc1ccccc1)C1CCCC1

3 rings, 22 atoms.

3 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H400Very toxic to aquatic life.
  • H410Very toxic to aquatic life with long lasting effects.
Precautionary statements (3)
  • P273Avoid release to the environment.
  • P391Collect spillage.
  • 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

Pencycuron suppliers

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

All 12 suppliers
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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 5 countries

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Pencycuron price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Use classes: Fungicides, Pesticides.

Roles

  • agrochemical
  • antifungal agent
  • antifungal agrochemical
  • antimicrobial agent
  • fungicide
  • pesticide

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 616-220-00-0

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Pencycuron 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 Pencycuron is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Pencycuron?

Pencycuron is a member of the class of phenylureas that is urea which is substituted by p-chlorobenzyl and cyclopentyl groups at position 1 and a phenyl group at position 3. A fungicide used to control diseases caused by Rhizoctonia solani and Pellicularia spp.

What is the CAS number of Pencycuron?

The CAS registry number of Pencycuron is 66063-05-6.

What is the molecular formula and weight of Pencycuron?

The molecular formula of Pencycuron is C19H21ClN2O and its molar mass is 328.84 g/mol.

What is Pencycuron used for?

Use classes: Fungicides, Pesticides.

Is Pencycuron hazardous?

Pencycuron carries the GHS signal word "Warning". Main hazards: very toxic to aquatic life, very toxic to aquatic life with long lasting effects. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Pencycuron?

Pencycuron 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 Pencycuron?

CompoundList lists 12 suppliers of Pencycuron in China, Brazil, Germany, India and 1 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Pencycuron in India?

1 supplier in India list Pencycuron on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Pencycuron?

Suppliers quote Pencycuron 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

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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