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Heterocyclic building blocks

Furoxan

Also known as furoxanyl, 2-oxido-1,2,5-oxadiazol-2-ium, 2-Oxo-1,2lambda~5~,5-oxadiazole

CAS 497-27-8Formula C2H2N2O2Molar mass 86.05 g/mol
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Furoxan chemical structure, C2H2N2O2, CAS 497-27-8
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
497-27-8
Formula
C2H2N2O2
Molar mass
86.05 g/mol
HS code
293499
Category
Heterocyclic building blocks

What is Furoxan?

Plain description, key identifiers and synonyms

Furoxan is a chemical substance with the molecular formula C2H2N2O2 and a molar mass of 86.05 g/mol. Its CAS registry number is 497-27-8. The IUPAC name is 2-oxido-1,2,5-oxadiazol-2-ium.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2-oxido-1,2,5-oxadiazol-2-ium
CAS number
497-27-8 CAS number cross-checked
Molecular formula
C2H2N2O2
InChIKey
KCMCIQNPQUSQKQ-UHFFFAOYSA-N
InChI
InChI=1S/C2H2N2O2/c5-4-2-1-3-6-4/h1-2H
SMILES (canonical and isomeric)
C1=NO[N+](=C1)[O-]

Synonyms

  • furoxanyl
  • 2-oxido-1,2,5-oxadiazol-2-ium
  • 2-Oxo-1,2lambda~5~,5-oxadiazole

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
86.05 g/molcalc.
Exact mass
86.0116 Dacalc.
LogP (octanol/water)
-0.69calc.
Topological polar surface area
52.97 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
0calc.
Heavy atoms
6calc.
Rings
1calc.
Aromatic rings
1calc.
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, c1cnon1

c1cnon1

1 ring, 5 atoms, the 1,2,5-Oxadiazole ring system.

346 other chemicals share 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.

Furoxan suppliers

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Furoxan 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

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

Frequently asked questions

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

What is Furoxan?

Furoxan is a chemical substance with the molecular formula C2H2N2O2 and a molar mass of 86.05 g/mol. Its CAS registry number is 497-27-8. The IUPAC name is 2-oxido-1,2,5-oxadiazol-2-ium.

What is the CAS number of Furoxan?

The CAS registry number of Furoxan is 497-27-8.

What is the molecular formula and weight of Furoxan?

The molecular formula of Furoxan is C2H2N2O2 and its molar mass is 86.05 g/mol.

What is Furoxan used for?

Known uses and roles of Furoxan include building blocks in research and laboratory and screening compounds in research and laboratory.

Is Furoxan hazardous?

No GHS hazard classification for Furoxan 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 Furoxan?

Furoxan 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 Furoxan?

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

What is the price of Furoxan?

Suppliers quote Furoxan 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 Furoxan

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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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