cAMPS-Sp, triethylammonium salt is a cell-permeable cAMP analog that activates cAMP receptor proteins such as PKA and cAMP-regulated guanine nucleotide exchange factor.
ESI-05 (NSC 116966) is a specific antagonist of EPAC2 (exchange protein directly activated by cAMP 2), with an IC50 of 0.4 ?M. ESI-05 (NSC 116966) inhibits cAMP-mediated activation of EPAC2 as well as EAPC2 mediated Rap1 activation.