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Herbicides

Pentoxazone

Also known as 3-[4-chloro-5-(cyclopentyloxy)-2-fluorophenyl]-5-(propan-2-ylidene)-1,3-oxazolidine-2,4-dione, 3-(4-chloro-5-cyclopentyloxy-2-fluorophenyl)-5-isopropylidene-1,3-oxazolidine-2,4-dione, 3-[4-chloro-5-(cyclopentyloxy)-2-fluorophenyl]-5-(1-methylethylidene)-2,4-oxazolidinedione

CAS 110956-75-7Formula C17H17ClFNO4Molar mass 353.78 g/molEC 601-016-6
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Pentoxazone chemical structure, C17H17ClFNO4, CAS 110956-75-7
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
110956-75-7
Formula
C17H17ClFNO4
Molar mass
353.78 g/mol
EC number
601-016-6
HS code
293499
Category
Herbicides

What is Pentoxazone?

Plain description, key identifiers and synonyms

Pentoxazone is an oxazolidinone that is 1,3-oxazolidine-2,4-dione which is substituted on the nitrogen (position 3) by a 4-chloro-5-(cyclopentyloxy)-2-fluorophenyl group, and at position 5 by an isopropylidene group. A protoporphyrinogen oxidase inhibitor, it is used as a pre- and post-emergence herbicide to control weeds in rice. It has a role as a herbicide, an agrochemical and an EC 1.3.3.4 (protoporphyrinogen oxidase) inhibitor. It is an aromatic ether, an oxazolidinone, a member of monochlorobenzenes and a member of monofluorobenzenes.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
3-(4-chloro-5-cyclopentyloxy-2-fluorophenyl)-5-propan-2-ylidene-1,3-oxazolidine-2,4-dione
CAS number
110956-75-7 CAS number cross-checked
EC number
601-016-6
Molecular formula
C17H17ClFNO4
UNII
8LW0PP7NLI
InChIKey
JZPKLLLUDLHCEL-UHFFFAOYSA-N
InChI
InChI=1S/C17H17ClFNO4/c1-9(2)15-16(21)20(17(22)24-15)13-8-14(11(18)7-12(13)19)23-10-5-3-4-6-10/h7-8,10H,3-6H2,1-2H3
SMILES (canonical and isomeric)
CC(=C1C(=O)N(C(=O)O1)C2=CC(=C(C=C2F)Cl)OC3CCCC3)C

Synonyms

  • 3-[4-chloro-5-(cyclopentyloxy)-2-fluorophenyl]-5-(propan-2-ylidene)-1,3-oxazolidine-2,4-dione
  • 3-(4-chloro-5-cyclopentyloxy-2-fluorophenyl)-5-isopropylidene-1,3-oxazolidine-2,4-dione
  • 3-[4-chloro-5-(cyclopentyloxy)-2-fluorophenyl]-5-(1-methylethylidene)-2,4-oxazolidinedione
  • 3-[4-chloro-5-(cyclopentyloxy)-2-fluorophenyl]-5-isopropylidene-1,3-oxazolidine-2,4-dione
  • 3-(4-Chloro-5-(cyclopentyloxy)-2-fluorophenyl)-5-(1-methylethylidene)-2,4-oxazolidinedione
  • 3-(4-chloro-5-(cyclopentyloxy)-2-fluorophenyl)-5-isopropylidene-1,3-oxazolidine-2,4-dione
  • 3-(4-chloro-5-(cyclopentyloxy)-2-fluorophenyl)-5-(propan-2-ylidene)-1,3-oxazolidine-2,4-dione
  • 3-(4-chloro-5-cyclopentyloxy-2-fluorophenyl)-5-propan-2-ylidene-1,3-oxazolidine-2,4-dione
  • Pentoxazone 100 |Ig/mL in Acetonitrile
  • Pentoxazone 100 microg/mL in Acetonitrile
  • (2-fluoro-4-chloro-5-cyclopentyloxyphenyl)-5-isopropylidene-1,3-oxazolidine-2, 4-dione
  • (2-fluoro-4-chloro-5-cyclopentyloxyphenyl)-5-isopropylidene-1,3-oxazolidine-2,4-dione
  • (4-chloro-5-cyclopentyloxy-2-fluorophenyl)-5-isopropyliden-2,4-oxazolidinedione
  • 3-(4-chloro-5-(cyclopentyloxy)-2-fluorophenyl)-5-(propan-2-ylidene)oxazolidine-2,4-dione

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
353.78 g/molcalc.
Exact mass
353.083 Dacalc.
LogP (octanol/water)
4.58calc.
Topological polar surface area
55.84 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
3calc.
Heavy atoms
24calc.
Rings
3calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.41calc.
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, C=C1OC(=O)N(c2cccc(OC3CCCC3)c2)C1=O

C=C1OC(=O)N(c2cccc(OC3CCCC3)c2)C1=O

3 rings, 20 atoms.

No other chemical in our database has this scaffold.

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Pentoxazone suppliers

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Pentoxazone 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

Roles

  • agrochemical
  • enzyme inhibitor
  • herbicide
  • pesticide

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 Pentoxazone 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 Pentoxazone is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Pentoxazone?

Pentoxazone is an oxazolidinone that is 1,3-oxazolidine-2,4-dione which is substituted on the nitrogen (position 3) by a 4-chloro-5-(cyclopentyloxy)-2-fluorophenyl group, and at position 5 by an isopropylidene group.

What is the CAS number of Pentoxazone?

The CAS registry number of Pentoxazone is 110956-75-7.

What is the molecular formula and weight of Pentoxazone?

The molecular formula of Pentoxazone is C17H17ClFNO4 and its molar mass is 353.78 g/mol.

What is Pentoxazone used for?

Known uses and roles of Pentoxazone include herbicides in agriculture and crop protection, agrochemical, enzyme inhibitor, herbicide and pesticide.

Is Pentoxazone hazardous?

No GHS hazard classification for Pentoxazone is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Pentoxazone?

Pentoxazone 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 Pentoxazone?

Post a free request on CompoundList and suppliers of Pentoxazone will send you quotes. Your contact details stay private until you accept a quote.

What is the price of Pentoxazone?

Suppliers quote Pentoxazone 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 Pentoxazone

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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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