220486

Chk2 Inhibitor II

Chk2 Inhibitor II, BML-277, CAS 516480-79-8 is a cell-permeable, potent, reversible, ATP-competitive inhibitor of Chk2 (IC₅₀ = 15 nM).

• Synonym(s): Chk2 Inhibitor II, 2-(4-(4-Chlorophenoxy)phenyl)-1H-benzimidazole-5-carboxamide
• Empirical Formula (Hill Notation): C₂₀H₁₄ClN₃O₂
• CAS Number: 516480-79-8
• Molecular Weight: 363.80
• MDL number: MFCD08276917
• UNSPSC Code: 12352200
• NACRES: NA.77

Properties

• Quality Level: 100
• assay: ≥95% (HPLC)
• form: solid
• potency: 15 nM IC₅₀
• manufacturer/tradename: Calbiochem^®
• storage condition: OK to freeze; protect from light
• color: pale yellow
• solubility: DMSO: 5 mg/mL
• shipped in: ambient
• storage temp.: 2-8°C
• SMILES string: Clc1ccc(cc1)Oc2ccc(cc2)c3[nH]c4c(n3)cc(cc4)C(=O)N
• InChI: 1S/C20H14ClN3O2/c21-14-4-8-16(9-5-14)26-15-6-1-12(2-7-15)20-23-17-10-3-13(19(22)25)11-18(17)24-20/h1-11H,(H2,22,25)(H,23,24)
• InChI key: UXGJAOIJSROTTN-UHFFFAOYSA-N

Description

General description

A cell-permeable and reversible benzimidazolo compound that acts as a potent and ATP-competitive inhibitor of Chk2 with an IC₅₀ of 15 nM and a K_i of 37 nM. Displays ~ 1,000-fold greater selectivity over Cdk1/B and CK1 (IC₅₀ = 12 M and 17 M, respectively) and only weakly affects the activities of a panel of 31 kinases (<25% inhibition at 10 M), including Chk1. Shown to rescue both peripheral CD4⁺ and CD8⁺ T-cells from γ-irradiation-induced apoptosis with an EC₅₀ of 3 M and 7.6 M, respectively. Also available as a 25 mM solution in DMSO (Cat. No. 220491).

Biochem/physiol Actions

Cell permeable: yes

Ki = 37 nM inhibiting Chk2.EC50 = 3 µM and 7.6 µM in rescuing both peripheral CD4+ and CD8+ T-cells from γ-irradiation-induced apoptosis

Primary Target
Chk2

Product competes with ATP.

Reversible: yes

Target K_i: 37 nM inhibiting Chk2

Packaging

Packaged under inert gas

Warning

Toxicity: Standard Handling (A)

Reconstitution

Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 6 months at -20°C.

Other Notes

Arienti, K. L., et al. 2005. J. Med. Chem.48, 1873.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 3