CST, 9844S, H-89, Dihydrochloride

Product Usage Information
H-89, Dihydrochloride is supplied as 5.19 mg powder. Store at or below -20ºC. Before usage, dissolve powder in 0.5 ml DMSO to make 20 mM H-89, Dihydrochloride. For working concentrations of 10 μM-20 μM, dilute DMSO stock 1:2000 to 1:1000. Treat cells with the desired concentration for 30 minutes.
Storage
Store lyophilized or in solution at -20ºC, desiccated. Protect from light. In lyophilized form, the chemical is stable for 24 months. Once in solution, use within 3 months to prevent loss of potency. Aliquot to avoid multiple freeze/thaw cycles.
Background
H-89 is a potent selective inhibitor of cAMP dependent protein kinase (PKA). The IC50 of H-89 for PKA is approximately 50 nM and the inhibitiory effect on PKA substrate phosphorylation and related cellular functions range from 10 μM to 30 μM (1,2). In addition to PKA, H-89 also exhibits a moderate inhibitory effect on PKG and PKCμ, with IC50 in the 500 nM range (1,3). The inhibitory effect of H-89 is due to its competitive binding to the ATP pocket on the kinase catalytic subunit (4).
Alternate Names
H89; inhibitor; PKA; PKCu; PKG