O3636

Sigma-Aldrich

1H-[1,2,4]Oxadiazolo[4,3-a]quinoxalin-1-one

powder

Synonym(s):
ODQ
Empirical Formula (Hill Notation):
C9H5N3O2
CAS Number:
Molecular Weight:
187.15
MDL number:
PubChem Substance ID:
NACRES:
NA.32

Quality Level

assay

≥98% (TLC)

form

powder

color

pale yellow

solubility

ethanol: 1.2 mg/mL
DMSO: 5 mg/mL
H2O: insoluble

storage temp.

2-8°C

SMILES string

O=C1ON=C2C=Nc3ccccc3N12

InChI

1S/C9H5N3O2/c13-9-12-7-4-2-1-3-6(7)10-5-8(12)11-14-9/h1-5H

InChI key

LZMHWZHOZLVYDL-UHFFFAOYSA-N

Application

1H-[1,2,4]Oxadiazolo[4,3-a]quinoxalin-1-one has been used as a oxidising agent for  affinity selection-mass spectrometry (AS-MS) compound binding assay, as a soluble guanylate cyclase (sGC) inhibitor to inhibit S-nitroso-N-acetyl-DL-penicillamine (SNAP)-induced cGMP production.

Packaging

5, 25 mg in glass bottle

Biochem/physiol Actions

H-[1,2,4]Oxadiazolo[4,3-a]quinoxalin-1-one (ODQ) non competitively inhibits the action of nitric oxide-sensitive guanylyl cyclase and results in a supposedly irreversible oxidation of the prosthetic heme group. ODQ has been used to study the role of cyclic guanosine monophosphate (cGMP) pathway in nitric oxide (NO) signal transduction.
Selective inhibitor of nitric oxide-sensitive guanylyl cyclase.

Features and Benefits

This compound is also offered as part of Sigma′s Library of Pharmacologically Active Compounds (LOPAC®1280), a biologically annotated collection of high-quality, ready-to-screen compounds. Click here to learn more.

Caution

Hygroscopic

Legal Information

LOPAC is a registered trademark of Sigma-Aldrich Co. LLC

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

RIDADR

NONH for all modes of transport

WGK Germany

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Certificate of Origin

Yayoi Shiokawa et al.
Planta medica, 85(13), 1080-1087 (2019-07-26)
Although Acanthopanax senticosus root extract (ASRE), a functional food used in Japan, improves peripheral blood circulation and exerts vasorelaxant effects in rats under healthy conditions, the underlying mechanisms currently remain unclear. Therefore, we investigated the mechanisms responsible for ASRE-induced relaxation...
A Novel Selective Soluble Guanylate Cyclase Activator, MGV354, Lowers Intraocular Pressure in Preclinical Models, Following Topical Ocular Dosing
Prasanna G, et al.
Investigative Ophthalmology & Visual Science, 59(5), 1704-1716 (2018)
The role of nitric oxide during embryonic epidermis development of Xenopus laevis
Tomankova S, et al.
Biology Open, 6(6), 862-871 (2017)
Potent and selective inhibition of nitric oxide-sensitive guanylyl cyclase by 1H-[1,2,4]oxadiazolo[4,3-a]quinoxalin-1-one.
Garthwaite J
Molecular Pharmacology, 48(2), 184-188 (1995)
J Garthwaite et al.
Molecular pharmacology, 48(2), 184-188 (1995-08-01)
In brain and other tissues, nitric oxide (NO) operates as a diffusible second messenger that stimulates the soluble form of the guanylyl cylase enzyme and so elicits an accumulation of cGMP in target cells. Inhibitors of NO synthesis have been...

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