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Fungicides

Benquinox

Also known as Cerenox, Tserenox, Lerenox

CAS 495-73-8Formula C13H11N3O2Molar mass 241.25 g/molEC 207-807-9
GHS signal word: Danger. Pictograms: Acute toxicity (severe)
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Benquinox chemical structure, C13H11N3O2, CAS 495-73-8
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
495-73-8
Formula
C13H11N3O2
Appearance
Yellow-brown powder, yellow crystals from ethanol
Solubility
IN WATER 5 PPM, SOL IN ORGANIC SOLVENTS
HS code
292800
Category
Fungicides
Illustrative photo, yellow pigment powder in an open kraft paper sack in a chemical plant
Typical packagingIllustrative packaging image, not the actual product

What is Benquinox?

Plain description, key identifiers and synonyms

Benquinox is a member of benzamides.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
N'-(4-nitrosophenyl)benzohydrazide
CAS number
495-73-8 CAS number cross-checked
EC number
207-807-9
Molecular formula
C13H11N3O2
UNII
XVO47UK8V8
InChIKey
ORLIFVYIUIQGOA-UHFFFAOYSA-N
InChI
InChI=1S/C13H11N3O2/c17-13(10-4-2-1-3-5-10)15-14-11-6-8-12(16-18)9-7-11/h1-9,14H,(H,15,17)
SMILES (canonical and isomeric)
C1=CC=C(C=C1)C(=O)NNC2=CC=C(C=C2)N=O

Synonyms

  • Cerenox
  • Tserenox
  • Lerenox
  • Benchinox
  • Ceredon
  • Benguinox
  • Cereline
  • Tillantox
  • Cereden
  • Quinone oxime benzoylhydrazone
  • Bayer 15080
  • p-Benzoquinone oxime benzoylhydrazone
  • Chinonoxime-benzoylhydrazone
  • Chinonoxim-benzoylhydrazon
  • 1,4-Benzoquinone N'-benzoylhydrazone oxime
  • BAY 15080
  • 1,4-Benzoquinone oxime benzoylhydrazone
  • Benzoic acid, (4-oxo-2,5-cyclohexadien-1-ylidene)hydrazide 4-oxime
  • Benzoic acid, (4-oxo-2,5-cyclohexadien-1-ylidene)hydrazide, oxime
  • 0-09-00-00323 (Beilstein Handbook Reference)
  • Benzoic acid, (4-(hydroxyimino)-2,5-cyclohexadien-1-ylidene) hydrazide
  • Benzoic acid, (4-(hydroxyimino)-2,5-cyclohexadien-1-ylidene)hydrazide
  • Benzoic acid, [4-(hydroxyimino)-2,5-cyclohexadien-1-ylidene]hydrazide
  • benzoic acid [4-(hydroxyimino)-2,5-cyclohexadien-1-ylidene]hydrazide
  • Benzoic acid (4-(hydroxyimino)-2,5-cyclohexadien-1-ylidene)hydrazide
Show all 35 synonyms
  • Benzquinox
  • Chinonoximbenzoylhydrazon
  • Chinonoximebenzoylhydrazone
  • pBenzoquinone oxime benzoylhydrazone
  • 1,4Benzoquinone oxime benzoylhydrazone
  • 1,4Benzoquinone N'benzoylhydrazone oxime
  • 2'-(4-hydroxyiminocyclohexa-2,5-dienylidene)benzohydrazide
  • Benzoic acid, (4oxo2,5cyclohexadien1ylidene)hydrazide 4oxime
  • Benzoic acid, (4(hydroxyimino)2,5cyclohexadien1ylidene) hydrazide
  • COBH

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
Yellow-brown powder, yellow crystals from ethanolexp.
Solubility
IN WATER 5 PPM, SOL IN ORGANIC SOLVENTSexp.

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
241.25 g/molcalc.
Exact mass
241.0851 Dacalc.
LogP (octanol/water)
2.84calc.
Topological polar surface area
70.56 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
4calc.
Heavy atoms
18calc.
Rings
2calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0calc.
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(NNc1ccccc1)c1ccccc1

O=C(NNc1ccccc1)c1ccccc1

2 rings, 16 atoms, the 2'-Phenylbenzohydrazide ring system.

83 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS06: Acute toxicity (severe)
Acute toxicity (severe)

Hazard statements

  • H301Toxic if swallowed.
  • H312Harmful in contact with skin.
Precautionary statements (11)
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P316If swallowed: Get emergency medical help immediately.
  • P302 + P352If on skin: Wash with plenty of water.
  • P317Get medical help.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P405Store locked up.
  • 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

Benquinox suppliers

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Benquinox 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

Fungicide.

How it is made

By interaction of freshly prepared solid nitrosophenol with acid aq solution of benzoylhydrazine, product is used without further purification (petersen s et al, agnew chem 76: 217 (1955)).

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 650-006-00-8

HS code and trade data

Customs classification and reported world trade statistics

Global trade

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

HS 2928.00Indicative HS code

Organic derivatives of hydrazine or of hydroxylamine

World exports in 2024
$1.38B
−9.0% vs 2023, imports $1.52B
2019 to 2024
Top exporters
  1. Switzerland * partner reported44.0%
  2. China18.4%
  3. Italy9.4%
Top importers
  1. Brazil21.8%
  2. United States12.8%
  3. Italy10.8%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is Benquinox?

Benquinox is a member of benzamides.

What is the CAS number of Benquinox?

The CAS registry number of Benquinox is 495-73-8.

What is the molecular formula and weight of Benquinox?

The molecular formula of Benquinox is C13H11N3O2 and its molar mass is 241.25 g/mol.

What is Benquinox used for?

Fungicide.

Is Benquinox hazardous?

Benquinox carries the GHS signal word "Danger". Main hazards: toxic if swallowed, harmful in contact with skin. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Benquinox?

Benquinox is usually classified under HS code 292800 (Organic derivatives of hydrazine or of hydroxylamine). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Benquinox?

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What is the price of Benquinox?

Suppliers quote Benquinox 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 Benquinox

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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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