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Herbicides

Benazolin

Also known as 4-Chloro-2-oxo-3(2H)-benzothiazoleacetic acid, 4-Chloro-2-oxobenzothiazolin-3-ylacetic acid, 2-(4-chloro-2-oxo-1,3-benzothiazol-3-yl)acetic acid

CAS 3813-05-6Formula C9H6ClNO3SMolar mass 243.67 g/molEC 223-297-0
GHS signal word: Warning. Pictograms: Harmful or irritant 2 suppliers listed
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Benazolin chemical structure, C9H6ClNO3S, CAS 3813-05-6
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
3813-05-6
Formula
C9H6ClNO3S
Molar mass
243.67 g/mol
EC number
223-297-0
HS code
293420
Category
Herbicides

What is Benazolin?

Plain description, key identifiers and synonyms

Benazolin is a member of the class of benzothiazoles that is 4-chloro-1,3-benzothiazol-2(3H)-one which is substituted on the nitrogen by a carboxymethyl group and at position 4 by chlorine. A post-emergence herbicide used (generally as a salt or ester) for the control of annual weeds in wheat and oilseed rape. It is not approved for use with the European Union. It has a role as a herbicide and a synthetic auxin. It is a monocarboxylic acid, a member of benzothiazoles and an organochlorine pesticide. It is a conjugate acid of a benazolin(1-).

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2-(4-chloro-2-oxo-1,3-benzothiazol-3-yl)acetic acid
CAS number
3813-05-6 CAS number cross-checked
EC number
223-297-0
Molecular formula
C9H6ClNO3S
UNII
RB02FMB0BR
InChIKey
HYJSGOXICXYZGS-UHFFFAOYSA-N
InChI
InChI=1S/C9H6ClNO3S/c10-5-2-1-3-6-8(5)11(4-7(12)13)9(14)15-6/h1-3H,4H2,(H,12,13)
SMILES (canonical and isomeric)
C1=CC2=C(C(=C1)Cl)N(C(=O)S2)CC(=O)O

Synonyms

  • 4-Chloro-2-oxo-3(2H)-benzothiazoleacetic acid
  • 4-Chloro-2-oxobenzothiazolin-3-ylacetic acid
  • 2-(4-chloro-2-oxo-1,3-benzothiazol-3-yl)acetic acid
  • 4-Chloro-2,3-dihydro-2-oxo-1,3-benzothiazol-3-ylacetic acid
  • Eunasin
  • Metizolin
  • Cornox CWK
  • Benazalox
  • Bensecal
  • Cresopur
  • Herbazolin
  • Herbitox
  • Benopan
  • Benzar
  • Galipan
  • Ben-cornox
  • Tri-cornox special
  • Grassland weedkiller
  • Leymin
  • Tri-cornox
  • Ley-Cornox
  • 3-Benzothiazolineacetic acid, 4-chloro-2-oxo-
  • RD 7693
  • 3(2H)-Benzothiazoleacetic acid, 4-chloro-2-oxo-
  • EX 10781
Show all 37 synonyms
  • 4-Chloro-2-oxo-3-benzothiazolineacetic acid
  • (4-Chloro-2-oxo-1,3-benzothiazol-3(2H)-yl)acetic acid
  • Acetic acid, (4-chloro-2-oxobenzothiazol-3-yl)-
  • Springclene
  • Benasalox
  • Chamilox
  • Asset
  • Galtak
  • Tillox
  • Benazoline [ISO-French]
  • 2-(4-chloro-2-oxo-2,3-dihydro-1,3-benzothiazol-3-yl)acetic acid
  • BA 7688

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
243.67 g/molcalc.
Exact mass
242.9757 Dacalc.
LogP (octanol/water)
1.8calc.
Topological polar surface area
59.3 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
2calc.
Heavy atoms
15calc.
Rings
2calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0.11calc.
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=c1[nH]c2ccccc2s1

O=c1[nH]c2ccccc2s1

2 rings, 10 atoms, the Benzothiazolone ring system.

337 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

  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H412Harmful to aquatic life with long lasting effects.
Precautionary statements (11)
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • 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

Benazolin suppliers

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

All 2 suppliers

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

2 suppliers in 1 country

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Benazolin price

Indicative price range per kg from live supplier offers

No published prices right now

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

  • agonist
  • auxin
  • growth regulator
  • herbicide
  • hormone
  • molecular messenger
  • pesticide
  • plant growth regulator
  • plant hormone
  • synthetic auxin
  • xenobiotic

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 607-153-00-8

HS code and trade data

Customs classification and reported world trade statistics

Global trade

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

HS 2934.20Indicative HS code

Compounds containing in the structure a benzothiazole ring-system (whether or not…

World exports in 2024
$662M
+4.3% vs 2023, imports $630M
2019 to 2024
Top exporters
  1. China62.9%
  2. Belgium14.6%
  3. United States5.4%
Top importers
  1. India * partner reported18.5%
  2. United States18.1%
  3. Brazil6.7%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is Benazolin?

Benazolin is a member of the class of benzothiazoles that is 4-chloro-1,3-benzothiazol-2(3H)-one which is substituted on the nitrogen by a carboxymethyl group and at position 4 by chlorine. A post-emergence herbicide used (generally as a salt or ester) for the control of annual weeds in wheat and oilseed rape.

What is the CAS number of Benazolin?

The CAS registry number of Benazolin is 3813-05-6.

What is the molecular formula and weight of Benazolin?

The molecular formula of Benazolin is C9H6ClNO3S and its molar mass is 243.67 g/mol.

What is Benazolin used for?

Known uses and roles of Benazolin include herbicides in agriculture and crop protection, agonist, auxin, growth regulator, herbicide and 7 more.

Is Benazolin hazardous?

Benazolin carries the GHS signal word "Warning". Main hazards: causes skin irritation, causes serious eye irritation, harmful 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 Benazolin?

Benazolin is usually classified under HS code 293420 (Compounds containing in the structure a benzothiazole ring-system (whether or not…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Benazolin?

CompoundList lists 2 suppliers of Benazolin in China. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Benazolin?

Suppliers quote Benazolin 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 Benazolin

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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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