ON123300 是一种可透过血脑屏障的多激酶抑制剂，作用于CDK4、CDK6、Ark5、PDGFRβ、FGFR1、RET和Fyn，IC50值为3.9、9.82、5、26、26、9.2和11 nM。它在脑肿瘤中抑制 Akt 磷酸化及激活 ERK。

ON123300 is a potent and multi-targeted kinase inhibitor for CDK4/Ark5/PDGFRβ/FGFR1/RET/Fyn (IC50: 3.9/5/26/26/9.2/11 nM).

CDK1 kinase activity is tested by the CDK1/cyclin B complex purified from baculovirus to phosphorylate a biotinylated peptide substrate containing the consensus phosphorylation site for histone H1, which is phosphorylated in vivo by CDK1. Inhibition of CDK1 activity is measured by observing a decreased amount of 33P-γ-ATP incorporation into the immobilized substrate in streptavidin-coated 96-well scintillating microplates. CDK1 enzyme is diluted in 50 mM Tris-HCl (pH 8), 10 mM MgCl2, 0.1 mM Na3VO4, 1 mM DTT, 1% DMSO, 0.25 μM peptide, 0.1 μCi per well 33P-γ-ATP, and 5 μM ATP in the presence or absence of various concentrations of JNJ-7706621 and incubated at 30 °C for 1 hour. The reaction is terminated by washing with PBS containing 100 mM EDTA and plates are counted in a scintillation counter. IC50 is determined by Linear regression analysis of the percent inhibition by JNJ-7706621.

1357470-29-1

C24H27N7O

429.52

Ethanol:<1 mgml
H2O:<1 mgml
DMSO:28 mg/mL (65.2 mM)
Powder: -20°C for 3 years
In solvent: -80°C for 2 years