PIK-294 is a highly selective p110 inhibitor with an IC50 of 3 nM. PI3K contains a m-phenol and a pyrazolopyrimidine core. When PIK-294 is compared to tyrosine kinase–selective pyrazolopyrimidines such as PP20, the two molecules span more than 108 fold in relative target selectivity. PIK-294 is 20- to 60-fold more potent than the parent compound, PIK-293, making PIK-294 one of the most potent p110δ- selective inhibitors that has been reported. PIK-294 also inhibits p110α, p110β, p110γ, DNA-PK and mTOR with IC50 of 9.6, 0.67, 0.2, 48 and >50 µM.
Molecular Weight | 489.53 |
Formula | C28H23N7O2 |
CAS Number | 900185-02-6 |
Solubility (25°C) | DMSO 90 mg/mL |
Storage |
Powder -20°C 3 years ; 4°C 2 years In solvent -80°C 6 months ; -20°C 1 month |
Species | Mouse | Rat | Rabbit | Guinea pig | Hamster | Dog |
Weight (kg) | 0.02 | 0.15 | 1.8 | 0.4 | 0.08 | 10 |
Body Surface Area (m2) | 0.007 | 0.025 | 0.15 | 0.05 | 0.02 | 0.5 |
Km factor | 3 | 6 | 12 | 8 | 5 | 20 |
Animal A (mg/kg) = Animal B (mg/kg) multiplied by | Animal B Km |
Animal A Km |
For example, to modify the dose of Compound A used for a mouse (20 mg/kg) to a dose based on the BSA for a rat, multiply 20 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for Compound A of 10 mg/kg.
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