CompoundList

Cycluron

Also known as 3-Cyclooctyl-1,1-dimethylurea, Cyclouron, Urea, N'-cyclooctyl-N,N-dimethyl-

Cycluron chemical structure, C11H22N2O, CAS 2163-69-1
2D chemical structure

Key facts

What buyers check first

Appearance
Colorless crystals
Melting point
138 °C
Solubility
SOLUBILITY @ 20 °C: 1.1 G/L WATER, 67 G/KG ACETONE, 55 G/KG BENZENE, 500 G/KG METHANOL
HS code
292429
Category
Herbicides
Illustrative photo, colourless crystals in an open fibre drum in a chemical plant
Typical packagingIllustrative packaging image, not the actual product

What is Cycluron?

Plain description, key identifiers and synonyms

Cycluron is a member of ureas.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
3-cyclooctyl-1,1-dimethylurea
CAS number
2163-69-1 CAS number cross-checked
EC number
218-493-8
Molecular formula
C11H22N2O
UNII
V8K90CTK5Q
InChIKey
DQZCVNGCTZLGAQ-UHFFFAOYSA-N
InChI
InChI=1S/C11H22N2O/c1-13(2)11(14)12-10-8-6-4-3-5-7-9-10/h10H,3-9H2,1-2H3,(H,12,14)
SMILES (canonical and isomeric)
CN(C)C(=O)NC1CCCCCCC1

Synonyms

  • 3-Cyclooctyl-1,1-dimethylurea
  • Cyclouron
  • Urea, N'-cyclooctyl-N,N-dimethyl-
  • N-Cyclooctyl-N',N'-dimethylurea
  • HS 61
  • Urea, 3-cyclooctyl-1,1-dimethyl-
  • N'-Cyclooctyl-N,N-dimethylurea
  • 1-cyclooctyl-3,3-dimethylurea
  • 3-Cyclooctyl-1,1-dimethylharnstoff
  • OMU
  • Alipur (Salt/Mix)
  • Alipur-O (Salt/Mix)
  • 1,1-Dimethyl-3-cyclooctylurea
  • (dimethylamino)-N-cyclooctylcarboxamide
  • Urea, N-cyclooctyl-N,N-dimethyl-
  • O,N-Cyclooctyl-N',N'- dimethylurea
  • Cycluron, PESTANAL(R), analytical standard
  • Pesticide3_Cycluron_C11H22N2O_3-Cyclooctyl-1,1-dimethylurea

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
Colorless crystalsexp.
Odour
ODORLESSexp.
Melting point
138 °Cexp.
Solubility
SOLUBILITY @ 20 °C: 1.1 G/L WATER, 67 G/KG ACETONE, 55 G/KG BENZENE, 500 G/KG METHANOLexp.
Vapour pressure
1 × 10⁻⁷ MM HG @ 20 °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
198.31 g/molcalc.
Exact mass
198.1732 Dacalc.
LogP (octanol/water)
2.37calc.
Topological polar surface area
32.34 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
1calc.
Heavy atoms
14calc.
Rings
1calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.91calc.
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, C1CCCCCCC1

C1CCCCCCC1

1 ring, 8 atoms, the Cyclooctane ring system.

604 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

Hazard statements

  • H302Harmful if swallowed.
Precautionary statements (5)
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P301 + P317If swallowed: Get medical help.
  • P330Rinse mouth.
  • 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

Cycluron suppliers

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Cycluron price

Indicative price range per kg from live supplier offers

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

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Uses and applications

What the substance is used for, by industry and function

Pre-emergence herbicide.

In combination (3:2) with chlorbufam, pre-emergence herbicidal control of annual weeds in onions, peas, beans, and spinach. Also used in forestry, on seed beds before planting out and on beds for transplanting vegetables (restricted use).

Use ... for pre-emergence weed control in ... spinach.

Cycluron is used in 3:2 mixture with chlorbufam as a pre-emergence herbicide @ 3-6 l 'alipur'/hectare for control of annual weeds in sugar beet and several vegetable crops.

Use classes: Pharmaceuticals.

How it is made

By reaction of cyclo-octylamine with dimethylcarbamoyl chloride

Dry hydrogen chloride is led into a solution of 127 parts of cyclooctylamine in 410 parts of dry dioxane at room temperature until the whole of the amine has been converted into the hydrochloride. Then dry phosgene is led into the solution kept at 90 °C until the color of the solution has changed to yellow-brown, which requires about 2 to 3 hr.

Read more

After distilling off about 100 parts of dioxane (whereby the excess of phosgene and hydrogen chloride are removed), dimethylamine is led into the solution of the cyclooctyl isocyanate formed at room temperature until it is saturated and the reaction mixture kept at 50 °C for 1 hr after the end of the introduction, it is then allowed to cool and the precipitated 1-cyclooctyl-3,3-dimethylurea is filtered off by suction, suspended in water and after repeated filtration by suction dried in a vacuum drying cabinet at 60 °C. If necessary the compound can be recrystallized from cyclohexane. 168 parts of 1-cyclooctyl-3,3-dimethylurea ... are obtained.

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

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

HS 2924.29Indicative HS code

Cyclic amides (including cyclic carbamates) and their derivatives, salts thereof, other

World exports in 2024
$5.69B
−5.1% vs 2023, imports $5.8B
2019 to 2024
Top exporters
  1. China32.3%
  2. Switzerland * partner reported13.6%
  3. Norway * partner reported12.8%
Top importers
  1. United States15.9%
  2. Ireland15.8%
  3. Germany11.9%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

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

What is Cycluron?

Cycluron is a member of ureas.

What is the CAS number of Cycluron?

The CAS registry number of Cycluron is 2163-69-1.

What is the molecular formula and weight of Cycluron?

The molecular formula of Cycluron is C11H22N2O and its molar mass is 198.31 g/mol.

What is Cycluron used for?

Pre-emergence herbicide. In combination (3:2) with chlorbufam, pre-emergence herbicidal control of annual weeds in onions, peas, beans, and spinach. Also used in forestry, on seed beds before planting out and on beds for transplanting vegetables (restricted use). Use ... for pre-emergence weed control in ... spinach.

Is Cycluron hazardous?

Cycluron carries the GHS signal word "Warning". Main hazards: harmful if swallowed. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Cycluron?

Cycluron is usually classified under HS code 292429 (Cyclic amides (including cyclic carbamates) and their derivatives, salts thereof, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Cycluron?

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What is the price of Cycluron?

Suppliers quote Cycluron 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 Cycluron

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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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