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Herbicides

Orthosulfamuron

Also known as Kelion, Percutio, IR 5878

CAS 213464-77-8Formula C16H20N6O6SMolar mass 424.44 g/molEC 606-744-8
GHS signal word: Warning. Pictograms: Hazardous to the environment 4 suppliers listed
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Orthosulfamuron chemical structure, C16H20N6O6S, CAS 213464-77-8
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Very fine white powder with a tendency to form clumps
Melting point
157 °C
Boiling point
Decomposes before boiling
Density
1.48 at 22.0 °C
Solubility
In water, 629 mg/L at 20 °C (pH 7), 26.2 mg/L at 20 °C (pH 4), 38,900 mg/L at 20 °C (pH…
HS code
293359
Category
Herbicides
Illustrative photo, a white jumbo bulk bag of powder in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Orthosulfamuron?

Plain description, key identifiers and synonyms

Orthosulfamuron is an N-sulfonylurea and sulfuric amide resulting from the formal condensation of sulfuric acid with the primary amino group of 1-(4,6-dimethoxypyrimidin-2-yl)urea and with the primary amino group of 2-amino-N,N-dimethylbenzamide (1 mol eq. of each). An acetolactate synthase inhibitor, it is used as a pre- and post-emergent herbicide for the treatment of grasses and broad-leaved weeds in rice crops. It has a role as an EC 2.2.1.6 (acetolactate synthase) inhibitor and a herbicide. It is a tertiary carboxamide, an aromatic ether, a sulfuric amide and a N-sulfonylurea.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2-[(4,6-dimethoxypyrimidin-2-yl)carbamoylsulfamoylamino]-N,N-dimethylbenzamide
CAS number
213464-77-8 CAS number cross-checked
EC number
606-744-8
Molecular formula
C16H20N6O6S
UNII
RO0AIV9EYN
MDL number
MFCD09027340
InChIKey
UCDPMNSCCRBWIC-UHFFFAOYSA-N
InChI
InChI=1S/C16H20N6O6S/c1-22(2)14(23)10-7-5-6-8-11(10)20-29(25,26)21-16(24)19-15-17-12(27-3)9-13(18-15)28-4/h5-9,20H,1-4H3,(H2,17,18,19,21,24)
SMILES (canonical and isomeric)
CN(C)C(=O)C1=CC=CC=C1NS(=O)(=O)NC(=O)NC2=NC(=CC(=N2)OC)OC

Synonyms

  • Kelion
  • Percutio
  • IR 5878
  • 2-[(4,6-dimethoxypyrimidin-2-yl)carbamoylsulfamoylamino]-N,N-dimethylbenzamide
  • 1-(4,6-Dimethoxypyrimidin-2-yl)-3-[2-(dimethylcarbamoyl)phenylsulfamoyl]urea
  • 1-(4,6-Dimethoxypyrimidin-2-yl)-3-(2-(dimethylcarbamoyl)phenylsulfamoyl)urea
  • 2-({[(4,6-dimethoxypyrimidin-2-yl)carbamoyl]sulfamoyl}amino)-N,N-dimethylbenzamide
  • 2-((((((4,6-Dimethoxy-2-pyrimidinyl)amino)carbonyl)amino)sulfonyl)amino)-N,N-dimethylbenzamide
  • 2-[[[[[(4,6-dimethoxy-2-pyrimidinyl)amino]carbonyl]amino]sulfonyl]amino]-N,NN-dimethylbenzamide
  • 2-((((4,6-dimethoxypyrimidin-2-yl)carbamoyl)sulfamoyl)amino)-N,N-dimethylbenzamide
  • 2-((4,6-dimethoxypyrimidin-2-yl)carbamoylsulfamoylamino)-N,N-dimethylbenzamide
  • 2-((((((4,6-dimethoxy-2-pyrimidinyl)amino)carbonyl)amino)sulfonyl)amino)-N,NN-dimethylbenzamide
  • 2-[[[[[(4,6-dimethoxy-2-pyrimidinyl)amino]carbonyl]amino]sulfonyl]amino]-n,n-dimethylbenzamide
  • Benzamide,2-
  • (1-(4,6-dimethoxypyrimidin-2-yl)-3-
  • 2-((N-((4,6-Dimethoxypyrimidin-2-yl)carbamoyl)sulfamoyl)amino)-N,N-dimethylbenzamide
  • 2-[({[(4,6-dimethoxypyrimidin-2-yl)carbamoyl]amino}sulfonyl)amino]-N,N-dimethylbenzamide
  • Strada
  • 2-[(4,6-dimethoxypyrimidin-2-yl)carbamoylsulfamoylamino]-N,N-dimethyl-benzamide
  • Orthosulfamuron 100 |Ig/mL in Acetonitrile
  • Orthosulfamuron 100 microg/mL in Acetonitrile
  • Orthosulfamuron, PESTANAL(R), analytical standard
  • 2-{[(4,6-Dimethoxypyrimidin-2-yl)carbamoyl]sulfamamido}-N,N-dimethylbenzamide
  • Benzamide, 2-[[[[[(4,6-dimethoxy-2-pyrimidinyl)amino]carbonyl]amino]sulfonyl]amino]-N,N-dimethyl-

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
Very fine white powder with a tendency to form clumpsexp.
Melting point
157 °Cexp.
Boiling point
Decomposes before boilingexp.
Density
1.48 at 22.0 °Cexp.
Solubility
In water, 629 mg/L at 20 °C (pH 7), 26.2 mg/L at 20 °C (pH 4), 38,900 mg/L at 20 °C (pH 8.5)exp.
Vapour pressure
8.4 × 10⁻⁷ mm Hg at 20 °C 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
424.44 g/molcalc.
Exact mass
424.1165 Dacalc.
LogP (octanol/water)
0.67calc.
Topological polar surface area
151.9 Ųcalc.
Hydrogen bond donors
3calc.
Hydrogen bond acceptors
8calc.
Rotatable bonds
7calc.
Heavy atoms
29calc.
Rings
2calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0.25calc.
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(Nc1ncccn1)NS(=O)(=O)Nc1ccccc1

O=C(Nc1ncccn1)NS(=O)(=O)Nc1ccccc1

2 rings, 20 atoms.

No other chemical in our database has 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.
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

Orthosulfamuron suppliers

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

All 4 suppliers
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Where suppliers are based

4 suppliers in 4 countries

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Orthosulfamuron price

Indicative price range per kg from live supplier offers

No published prices right now

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Uses and applications

What the substance is used for, by industry and function

Herbicides (pyrimidinylsulfonylurea herbicides).

For use on rice.

Early post-emergence control of annual and perennial broad-leaved weeds, sedges and barnyard grass, in dry-seeded rice, water-seeded rice, transplanted rice, cereals, pastures and sugar cane.

Roles

  • enzyme inhibitor
  • herbicide
  • pesticide

How it is made

Orthosulfamuron can be synthesized by reaction of N,N-dimethyl 2-sulfamoylchloride benzcarbamate with 2-amino-4,6-dimethoxypyrimidine in the presence of a base.

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 Orthosulfamuron is traded under.

HS 2933.59Indicative HS code

Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring, other

World exports in 2024
$18.4B
+10.5% vs 2023, imports $24.8B
2019 to 2024
Top exporters
  1. Ireland43.6%
  2. Switzerland * partner reported26.3%
  3. China7.9%
Top importers
  1. Slovenia30.3%
  2. United States30.1%
  3. Germany15.3%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is Orthosulfamuron?

Orthosulfamuron is an N-sulfonylurea and sulfuric amide resulting from the formal condensation of sulfuric acid with the primary amino group of 1-(4,6-dimethoxypyrimidin-2-yl)urea and with the primary amino group of 2-amino-N,N-dimethylbenzamide (1 mol eq. of each).

What is the CAS number of Orthosulfamuron?

The CAS registry number of Orthosulfamuron is 213464-77-8.

What is the molecular formula and weight of Orthosulfamuron?

The molecular formula of Orthosulfamuron is C16H20N6O6S and its molar mass is 424.44 g/mol.

What is Orthosulfamuron used for?

Herbicides (pyrimidinylsulfonylurea herbicides). For use on rice. Early post-emergence control of annual and perennial broad-leaved weeds, sedges and barnyard grass, in dry-seeded rice, water-seeded rice, transplanted rice, cereals, pastures and sugar cane.

Is Orthosulfamuron hazardous?

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

What is the HS code of Orthosulfamuron?

Orthosulfamuron is usually classified under HS code 293359 (Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Orthosulfamuron?

CompoundList lists 4 suppliers of Orthosulfamuron in Brazil, Switzerland, India and United States. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Orthosulfamuron in India?

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

What is the price of Orthosulfamuron?

Suppliers quote Orthosulfamuron 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 Orthosulfamuron

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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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