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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)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Chrishan J A Ramachandra et al.
Cardiovascular research, 118(2), 517-530 (2021-03-12)
Hypertrophic cardiomyopathy (HCM) is characterized by cardiomyocyte hypertrophy and disarray, and myocardial stiffness due to interstitial fibrosis, which result in impaired left ventricular filling and diastolic dysfunction. The latter manifests as exercise intolerance, angina, and dyspnoea. There is currently no
Sophie L Maiocchi et al.
Biochemical pharmacology, 135, 90-115 (2017-03-28)
The leukocyte-derived heme enzyme myeloperoxidase (MPO) is released extracellularly during inflammation and impairs nitric oxide (NO) bioavailability by directly oxidizing NO or producing NO-consuming substrate radicals. Here, structurally diverse pharmacological agents with activities as MPO substrates/inhibitors or antioxidants were screened
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
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
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.

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