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Herbicides

Pyroxasulfone

Also known as 3-[[5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)pyrazol-4-yl]methylsulfonyl]-5,5-dimethyl-4H-1,2-oxazole, 3-((5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)pyrazol-4-yl)methylsulfonyl)-5,5-dimethyl-4H-1,2-oxazole, 3-(((5-(Difluoromethoxy)-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl)methyl)sulfonyl)-5,5-dimethyl-4,5-dihydroisoxazole

CAS 447399-55-5Formula C12H14F5N3O4SMolar mass 391.32 g/molEC 800-417-5
GHS signal word: Warning. Pictograms: Serious health hazard, Hazardous to the environment 24 suppliers listed
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Pyroxasulfone chemical structure, C12H14F5N3O4S, CAS 447399-55-5
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
447399-55-5
Formula
C12H14F5N3O4S
Molar mass
391.32 g/mol
EC number
800-417-5
HS code
293499
Category
Herbicides

What is Pyroxasulfone?

Plain description, key identifiers and synonyms

Pyroxasulfone is a member of the class of pyrazoles that is 1H-pyrazole substituted by methyl, trifluoromethyl, (5,5-dimethyl-4,5-dihydro-1,2-oxazole-3-sulfonyl)methyl, and difluoromethoxy groups at positions 1, 3, 4, and 5, respectively. It is a herbicide that inhibits the biosynthesis of very-long-chain fatty acids and used for the pre-emergent control of annual ryegrass, barley grass, and suppression of specific grass weeds in wheat. It has a role as a herbicide. It is a member of pyrazoles, an aromatic ether, a sulfone, an organofluorine compound and an isoxazoline.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
3-[[5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)pyrazol-4-yl]methylsulfonyl]-5,5-dimethyl-4H-1,2-oxazole
CAS number
447399-55-5 CAS number cross-checked
EC number
800-417-5
Molecular formula
C12H14F5N3O4S
UNII
04XP114422
MDL number
MFCD17167020
InChIKey
CASLETQIYIQFTQ-UHFFFAOYSA-N
InChI
InChI=1S/C12H14F5N3O4S/c1-11(2)4-7(19-24-11)25(21,22)5-6-8(12(15,16)17)18-20(3)9(6)23-10(13)14/h10H,4-5H2,1-3H3
SMILES (canonical and isomeric)
CC1(CC(=NO1)S(=O)(=O)CC2=C(N(N=C2C(F)(F)F)C)OC(F)F)C

Synonyms

  • 3-[[5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)pyrazol-4-yl]methylsulfonyl]-5,5-dimethyl-4H-1,2-oxazole
  • 3-((5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)pyrazol-4-yl)methylsulfonyl)-5,5-dimethyl-4H-1,2-oxazole
  • 3-(((5-(Difluoromethoxy)-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl)methyl)sulfonyl)-5,5-dimethyl-4,5-dihydroisoxazole
  • 3-{[5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl]methanesulfonyl}-5,5-dimethyl-4,5-dihydro-1,2-oxazole
  • 3-[[[5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)-1h-pyrazol-4-yl]methyl]sulfonyl]-4,5-dihydro-5,5-dimethylisoxazole
  • Sakura
  • Zidua
  • 3-(((5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)-1h-pyrazol-4-yl)methyl)sulfonyl)-4,5-dihydro-5,5-dimethylisoxazole
  • 3-({[5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl]methyl}sulfonyl)-4,5-dihydro-5,5-dimethylisoxazole
  • 3-({[5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl]methyl}sulfonyl)-5,5-dimethyl-4,5-dihydroisoxazole
  • Isoxazole, 3-(((5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl)methyl)sulfonyl)-4,5-dihydro-5,5-dimethyl-
  • Isoxazole, 3-[[[5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl]methyl]sulfonyl]-4,5-dihydro-5,5-dimethyl-
  • Pyroxasulfone Solution
  • Pyroxasulfone 100 |Ig/mL in Acetonitrile
  • Pyroxasulfone 100 microg/mL in Acetonitrile
  • [5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl]methyl 4,5-dihydro-5,5-dimethylisoxazol-3-yl sulfone
  • 3-({[5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl]methyl}sulfonyl)-5,5-dimethyl-4,5-dihydro-1,2-oxazole
  • 3-[[5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)pyrazol-4-yl]methylsulfonyl]-5,5-dimethyl-4H-isoxazole
  • 3-{[5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl](methanesulfonyl)}-5,5-dimethyl-4,5-dihydro-1,2-oxazole
  • 5-(Difluoromethoxy)-1-methyl-3-(trifluoromethyl)pyrazol-4-ylmethyl 4,5-dihydro-5,5-dimethyl-1,2-oxazol-3-yl sulfone
  • Isoxazole,3-[[[5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl]methyl]sulfonyl]-4,5-dihydro-5,5-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

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
391.32 g/molcalc.
Exact mass
391.0625 Dacalc.
LogP (octanol/water)
2.47calc.
Topological polar surface area
82.78 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
6calc.
Rotatable bonds
4calc.
Heavy atoms
25calc.
Rings
2calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.67calc.
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=S(=O)(Cc1cn[nH]c1)C1=NOCC1

O=S(=O)(Cc1cn[nH]c1)C1=NOCC1

2 rings, 14 atoms.

1 other chemical share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS08: Serious health hazard
Serious health hazard
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H373May cause damage to organs through prolonged or repeated exposure.
  • H400Very toxic to aquatic life.
  • H410Very toxic to aquatic life with long lasting effects.
Precautionary statements (5)
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P273Avoid release to the environment.
  • P319Get medical help if you feel unwell.
  • 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

Pyroxasulfone suppliers

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

All 24 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

24 suppliers in 6 countries

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Pyroxasulfone 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

Roles

  • herbicide
  • pesticide

Functional uses

  • Biocide

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 Pyroxasulfone is traded under.

HS 2934.99Indicative HS code

Nucleic acids and their salts, other heterocyclic compounds, not elsewhere classified in heading 2934

World exports in 2024
$26.7B
+15.0% vs 2023, imports $26.3B
2019 to 2024
Top exporters
  1. Ireland26.3%
  2. China15.7%
  3. Singapore10.3%
Top importers
  1. United States24.5%
  2. Germany23.1%
  3. Japan4.5%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

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

What is Pyroxasulfone?

Pyroxasulfone is a member of the class of pyrazoles that is 1H-pyrazole substituted by methyl, trifluoromethyl, (5,5-dimethyl-4,5-dihydro-1,2-oxazole-3-sulfonyl)methyl, and difluoromethoxy groups at positions 1, 3, 4, and 5, respectively.

What is the CAS number of Pyroxasulfone?

The CAS registry number of Pyroxasulfone is 447399-55-5.

What is the molecular formula and weight of Pyroxasulfone?

The molecular formula of Pyroxasulfone is C12H14F5N3O4S and its molar mass is 391.32 g/mol.

What is Pyroxasulfone used for?

Known uses and roles of Pyroxasulfone include herbicides in agriculture and crop protection, herbicide, pesticide and biocide.

Is Pyroxasulfone hazardous?

Pyroxasulfone carries the GHS signal word "Warning". Main hazards: may cause damage to organs through prolonged or repeated exposure, 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 Pyroxasulfone?

Pyroxasulfone is usually classified under HS code 293499 (Nucleic acids and their salts, whether or not chemically defined, other heterocyclic…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Pyroxasulfone?

CompoundList lists 24 suppliers of Pyroxasulfone in China, Brazil, India, Canada and 2 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Pyroxasulfone in India?

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

What is the price of Pyroxasulfone?

Suppliers quote Pyroxasulfone 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 Pyroxasulfone

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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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