
a highly selective and potent PDE10A inhibitor with an IC50 of 0.37 nM. primarily in the brain, mostly in the striatum, nucleus accumbens thought to be particularly important in regulating the activity of neurons in the striatum which are known to be targets of conventional antipsychotic avoidance response assay (CAR), PF-2545920 was active with an ED50 PF-2545920 to mice caused a dose dependent increase in striatal cGMP.