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Key Documents

SML2347

Sigma-Aldrich

RU.521

≥98% (HPLC)

Synonym(s):

3-[1-(6,7-dichloro-1H-benzimidazol-2-yl)-5-hydroxy-3-methyl-pyrazol-4-yl]-3H-isobenzofuran-1-one, RU-521, RU320521

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About This Item

Empirical Formula (Hill Notation):
C19H12Cl2N4O3
CAS Number:
Molecular Weight:
415.23
UNSPSC Code:
12352200
NACRES:
NA.77

Assay

≥98% (HPLC)

form

powder

color

white to beige

solubility

DMSO: 2 mg/mL, clear

storage temp.

2-8°C

Biochem/physiol Actions

RU.521 (RU320521) is a potent and selective inhibitor of cyclic GMP-AMP synthase (cGAS) that suppresses the chronically elevated levels of type I interferon in primary macrophages from Trex1 null mice. Ru.521 binds to the CGAS catalytic pocket and inhibits dsDNA-induced cGAS-mediated interferon upregulation.
RU.521 helps to understand the biological functions of cyclic guanosine monophosphate-adenosine monophosphate (cyclic GMP-AMP) synthase. It can act as a molecular scaffold for developing future autoimmune therapies. RU.521 can also inhibit the inflammatory cytokine expression induced by Aspergillus fumigatus.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

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Fang Han et al.
Experimental eye research, 202, 108366-108366 (2020-11-24)
Fungal keratitis is a serious corneal infection, which can lead to significant visual impairment and blindness. The cGAS-STING signaling pathway has emerged as a key player in innate immunity by sensing of invading pathogens. However, the role of the cGAS-STING

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