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Key Documents

SML3274

Sigma-Aldrich

AZD5904

≥95% (HPLC)

Synonym(s):

(R)-3-(2-Tetrahydrofuryl-methyl)-2-thioxanthine, (R)-TX3, 3-[[(2R)-Tetrahydrofuran-2-yl]methyl]-2-thioxo-7H-purin-6-one, AZD 5904, AZD-5904, TX3 R-enantiomer, TX4

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About This Item

Empirical Formula (Hill Notation):
C10H12N4O2S
CAS Number:
Molecular Weight:
252.29
UNSPSC Code:
12352200
NACRES:
NA.77

Quality Level

Assay

≥95% (HPLC)

form

powder

color

white to beige

solubility

DMSO: 2 mg/mL, clear

storage temp.

−20°C

SMILES string

O=C1NC(N(C[C@@H]2OCCC2)C3=C1NC=N3)=S

Biochem/physiol Actions

AZD5904 (TX4) is an orally active 2-thioxanthine class suicide substrate that targets myeloperoxidase (MPO) for mechanism-based inactivation, covalently modifying MPO heme group without converting the enzyme to compound II. AZD5904 effectively inhibits peroxide-induced human MPO chlorination activity (IC50 = 0.2 μM) and extracellular MPO activity in PMA-stimulated human neutrophil cultures (by 68% at 1 μM). Oral administration (20-180 μmol/kg) of the racemate (TX3) is efficacious in reducing inflammation site MPO activity in mice in vivo with 10- to 19-fold selectivity over lactoperoxidase (LPO), thyroid peroxidase (TPO), and >70-fold selectivity over a panel of other enzymes, ion channels, and receptors.

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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Weidong Chai et al.
American journal of physiology. Endocrinology and metabolism, 317(6), E1063-E1069 (2019-10-09)
A high-fat diet (HFD) can rapidly recruit neutrophils to insulin target tissues and within days induce microvascular insulin resistance (IR). Myeloperoxidase (MPO) is highly enriched in neutrophils, can inhibit nitric oxide-mediated vasorelaxation in vitro and is associated with increased cardiovascular
Anna-Karin Tidén et al.
The Journal of biological chemistry, 286(43), 37578-37589 (2011-09-02)
Myeloperoxidase (MPO) is a prime candidate for promoting oxidative stress during inflammation. This abundant enzyme of neutrophils uses hydrogen peroxide to oxidize chloride to highly reactive and toxic chlorine bleach. We have identified 2-thioxanthines as potent mechanism-based inactivators of MPO.
Lars B Nilsson et al.
Rapid communications in mass spectrometry : RCM, 26(12), 1399-1406 (2012-05-18)
The investigations in this article were triggered by two observations in the laboratory; for some liquid chromatography/tandem mass spectrometry (LC/MS/MS) systems it was possible to obtain linear calibration curves for extreme concentration ranges and for some systems seemingly linear calibration
Reena J Popat et al.
JCI insight, 2(2), e87379-e87379 (2017-02-01)
Anti-neutrophil cytoplasmic antibody (ANCA) vasculitis is characterized by the presence of autoantibodies to myeloperoxidase and proteinase-3, which bind monocytes in addition to neutrophils. While a pathological effect on neutrophils is acknowledged, the impact of ANCA on monocyte function is less
Halla Björnsdottir et al.
Free radical biology & medicine, 89, 1024-1035 (2015-10-16)
Neutrophil extracellular traps (NETs) are mesh-like DNA fibers clad with intracellular proteins that are cast out from neutrophils in response to certain stimuli. The process is thought to depend on reactive oxygen species (ROS) generated by the phagocyte NADPH-oxidase and

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