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. 2009 May 26;158(1):372–381. doi: 10.1111/j.1476-5381.2009.00275.x

Table 1.

Potencies of EP3 receptor antagonists in the fluorescence imaging plate reader assay

Human EP3 Rat EP3
CM9 pIC50 7.03 ± 0.04 (n= 101) 6.58 ± 0.04 (n= 73)
fpKi 7.77 ± 0.04 7.12 ± 0.04
DG041 pIC50 7.66 ± 0.04 (n= 101) 7.04 ± 0.03(n= 70)
fpKi 8.41 ± 0.04 7.57 ± 0.03

pIC50 values were measured in response to an EC80 challenge of the EP3 receptor agonist PGE2.