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Herbicides

Chlorsulfuron

Also known as Glean, Chlorsulfon, Telar

CAS 64902-72-3Formula C12H12ClN5O4SMolar mass 357.78 g/molEC 265-268-5
GHS signal word: Warning. Pictograms: Hazardous to the environment 24 suppliers listed
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Chlorsulfuron chemical structure, C12H12ClN5O4S, CAS 64902-72-3
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
White crystalline solid
Melting point
176 °C
Solubility
In water, 125 mg/L at 25 °C
HS code
293590
Category
Herbicides
UN number
UN 3077
Illustrative photo, colourless crystals beside a jumbo bulk bag in a chemical plant
Typical packagingIllustrative packaging image, not the actual product

What is Chlorsulfuron?

Plain description, key identifiers and synonyms

Chlorsulfuron is an N-sulfonylurea that is N-carbamoyl-2-chlorobenzenesulfonamide in which one of the hydrogens attached to the non-sulfonylated nitrogen has been replaced by a 4-methoxy-6-methyl-1,3,5-triazin-2-yl group. A herbicide used for the control of broadleaf weeds in wheat, barley and oats. It has a role as an EC 2.2.1.6 (acetolactate synthase) inhibitor, a herbicide and an agrochemical. It is a methoxy-1,3,5-triazine, a N-sulfonylurea and a member of monochlorobenzenes.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
1-(2-chlorophenyl)sulfonyl-3-(4-methoxy-6-methyl-1,3,5-triazin-2-yl)urea
CAS number
64902-72-3 CAS number cross-checkedOther or deprecated CAS: 112143-77-8, 79793-04-7
EC numbers
265-268-5, 279-271-4
Molecular formula
C12H12ClN5O4S
UNII
O6S620ML45
MDL number
MFCD00128059
InChIKey
VJYIFXVZLXQVHO-UHFFFAOYSA-N
InChI
InChI=1S/C12H12ClN5O4S/c1-7-14-10(17-12(15-7)22-2)16-11(19)18-23(20,21)9-6-4-3-5-8(9)13/h3-6H,1-2H3,(H2,14,15,16,17,18,19)
SMILES (canonical and isomeric)
CC1=NC(=NC(=N1)OC)NC(=O)NS(=O)(=O)C2=CC=CC=C2Cl

Synonyms

  • Glean
  • Chlorsulfon
  • Telar
  • Trilixon
  • 2-Chlorsulfuron
  • Glean C
  • 1-(2-chlorophenyl)sulfonyl-3-(4-methoxy-6-methyl-1,3,5-triazin-2-yl)urea
  • Glean 20DF
  • DPX 4189
  • 1-(2-Chlorophenylsulfonyl)-3-(4-methoxy-6-methyl-1,3,5-triazin-2-yl)urea
  • 2-Chloro-N-((4-methoxy-6-methyl-1,3,5-triazin-2-yl)aminocarbonyl)-benzenesulfonamide
  • 1-((o-Chlorophenyl)sulfonyl)-3-(4-methoxy-6-methyl-s-triazin-2-yl)urea
  • 1-(2-Chlorophenylsulphonyl)-3-(4-methoxy-6-methyl-1,3,5-triazin-2-yl)urea
  • 2-Chloro-N-(((4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino)carbonyl)benzenesulfonamide
  • 2-Chloro-N-((4-methoxy-6-methyl-1,3,5-triazin-2-yl)carbamoyl)benzenesulfonamide
  • 2-chloro-N-[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)carbamoyl]benzenesulfonamide
  • 2-chloro-N-(((4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino)carbonyl)benzensulfonamide
  • 2-Chloro-N-[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino]carbonyl]benzensulfonamide
  • 2-chloro-N-{[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino]carbonyl}benzenesulfonamide
  • 1-(2-chlorobenzenesulfonyl)-3-(4-methoxy-6-methyl-1,3,5-triazin-2-yl)urea
  • chlorsulfuron (ISO), 2-chloro-N-(((4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino)carbonyl)benzenesulphonamide
  • Chlorosulfuron
  • Khardin
  • Urea, 1-((o-chlorophenyl)sulfonyl)-3-(4-methoxy-6-methyl-s-triazin-2-yl)-
  • 1-(2-Chlorophenylsulfonyl)-3-(4-methoxy-6-methyl-l,3,5-triazin-2-yl)urea
Show all 34 synonyms
  • Benzenesulfonamide, 2-chloro-N-(((4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino)carbonyl)-
  • 2-chloro-N-[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)carbamoyl]benzene-1-sulfonamide
  • Benzenesulfonamide, 2-chloro-N-[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino]carbonyl]-
  • C12H12ClN5O4S
  • Chlorsulphuron
  • Tuligen
  • 1-(2-Chlorophenylsulfonyl)-3-(4-methoxy-6-methyl-1,3,5-triazin-2-yl)-urea
  • Glean 20FF
  • 5-26-09-00405 (Beilstein Handbook Reference)

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.
Odour
Odorlessexp.
Melting point
176 °Cexp.
Solubility
In water, 125 mg/L at 25 °Cexp.
Vapour pressure
2.25 × 10⁻¹¹ mm Hg at 25 °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
357.78 g/molcalc.
Exact mass
357.0299 Dacalc.
LogP (octanol/water)
1.35calc.
Topological polar surface area
123.2 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
7calc.
Rotatable bonds
4calc.
Heavy atoms
23calc.
Rings
2calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0.17calc.
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, O=C(Nc1ncncn1)NS(=O)(=O)c1ccccc1

O=C(Nc1ncncn1)NS(=O)(=O)c1ccccc1

2 rings, 19 atoms, the N-((1,3,5-Triazin-2-yl)carbamoyl)benzenesulfonamide ring system.

49 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.
UN number
UN 3077

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

Chlorsulfuron suppliers

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Where suppliers are based

24 suppliers in 7 countries

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Chlorsulfuron 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

A selective preemergence or early postemergence herbicide used at low rates.

Pharmacological actions

  • Herbicides

Roles

  • agrochemical
  • enzyme inhibitor
  • herbicide
  • pesticide

Functional uses

  • Biocide

How it is made

Chlorsulfuron is produced by reaction of 2-sulfonylisocyanate chlorobenzene with 2-amino-4,6-dimethoxy-1,3,5-triazine.

Prepn: G. Levitt, German patent 2715786, idem, United States of America patent 4127405 (1977, 1978 both to du Pont).

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 613-121-00-4

HS code and trade data

Customs classification and reported world trade statistics

Global trade

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

HS 2935.90Indicative HS code

Sulphonamides, other

World exports in 2024
$5.64B
−11.0% vs 2023, imports $8.56B
2019 to 2024
Top exporters
  1. Ireland43.1%
  2. China12.0%
  3. India * partner reported9.5%
Top importers
  1. United States23.6%
  2. Slovenia19.1%
  3. Spain11.7%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is Chlorsulfuron?

Chlorsulfuron is an N-sulfonylurea that is N-carbamoyl-2-chlorobenzenesulfonamide in which one of the hydrogens attached to the non-sulfonylated nitrogen has been replaced by a 4-methoxy-6-methyl-1,3,5-triazin-2-yl group. A herbicide used for the control of broadleaf weeds in wheat, barley and oats.

What is the CAS number of Chlorsulfuron?

The CAS registry number of Chlorsulfuron is 64902-72-3. Other or deprecated CAS numbers: 112143-77-8, 79793-04-7.

What is the molecular formula and weight of Chlorsulfuron?

The molecular formula of Chlorsulfuron is C12H12ClN5O4S and its molar mass is 357.78 g/mol.

What is Chlorsulfuron used for?

A selective preemergence or early postemergence herbicide used at low rates.

Is Chlorsulfuron hazardous?

Chlorsulfuron 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 Chlorsulfuron?

Chlorsulfuron is usually classified under HS code 293590 (Sulphonamides, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Chlorsulfuron?

CompoundList lists 24 suppliers of Chlorsulfuron in China, United States, India, Canada and 3 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Chlorsulfuron in India?

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

What is the price of Chlorsulfuron?

Suppliers quote Chlorsulfuron 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 Chlorsulfuron

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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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