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Merck

O3636

Sigma-Aldrich

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

powder

Sinónimos:

ODQ

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About This Item

Fórmula empírica (notación de Hill):
C9H5N3O2
Número de CAS:
Peso molecular:
187.15
MDL number:
UNSPSC Code:
41106305
PubChem Substance ID:
NACRES:
NA.32

assay

≥98% (TLC)

Quality Level

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.

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.

Caution

Hygroscopic

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves


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Characterization of 1H-[1,2,4]oxadiazolo[4,3-a]quinoxalin-1-one as a heme-site inhibitor of nitric oxide-sensitive guanylyl cyclase.
Schrammel A
Molecular Pharmacology, 50(1), 1-5 (1996)
Serena Materazzi et al.
Microvascular research, 109, 38-44 (2016-11-08)
The role of endogenous H2S has been highlighted as a gaseous transmitter. The vascular smooth muscle inhibitory effects of H2S have been characterized in isolated aorta and mesenteric arteries in rats and mice. Our study was aimed at investigating the
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
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
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)

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