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Merck
CN

SML2347

RU.521

≥98% (HPLC), cGAS inhibitor, powder

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:
2262452-06-0
Molecular Weight:
415.23
UNSPSC Code:
12352200
NACRES:
NA.77

Key Documents

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Product Name

RU.521, ≥98% (HPLC)

Assay

≥98% (HPLC)

form

powder

color

white to beige

solubility

DMSO: 2 mg/mL, clear

storage temp.

2-8°C

SMILES string

Clc1c2nc([nH]c2ccc1Cl)[n]3nc(c(c3O)C4OC(=O)c5c4cccc5)C

InChI

1S/C19H12Cl2N4O3/c1-8-13(16-9-4-2-3-5-10(9)18(27)28-16)17(26)25(24-8)19-22-12-7-6-11(20)14(21)15(12)23-19/h2-7,16,26H,1H3,(H,22,23)

InChI key

VIQXILLOJLATEF-UHFFFAOYSA-N

Related Categories

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.
potent and selective inhibitor of cyclic GMP-AMP synthase (cGAS)

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
0000500797
0000500797
0000366029
0000366029
0000217935

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M Grazia Cotticelli et al.
Disease models & mechanisms, 16(5) (2022-09-16)
Friedreich ataxia, the most common hereditary ataxia, is a neuro- and cardio-degenerative disorder caused, in most cases, by decreased expression of the mitochondrial protein frataxin. Cardiomyopathy is the leading cause of premature death. Frataxin functions in the biogenesis of iron-sulfur
Jessica Vincent et al.
Nature communications, 8(1), 750-750 (2017-10-01)
Cyclic GMP-AMP synthase is essential for innate immunity against infection and cellular damage, serving as a sensor of DNA from pathogens or mislocalized self-DNA. Upon binding double-stranded DNA, cyclic GMP-AMP synthase synthesizes a cyclic dinucleotide that initiates an inflammatory cellular
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
Christine Marques et al.
Acta neuropathologica, 147(1), 56-56 (2024-03-13)
The stimulator of interferon genes (STING) pathway has been implicated in neurodegenerative diseases, including Parkinson's disease and amyotrophic lateral sclerosis (ALS). While prior studies have focused on STING within immune cells, little is known about STING within neurons. Here, we

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