CAS 41270-66-0: Pyrazine, 5-chloro-2,3-diphenyl-

5-Chloro-2,3-diphenylpyrazine

2-Chloro-5,6-diphenylpyrazine is a potent, selective inhibitor of the prostacyclin receptor (IP). The IC50 is 0.3 μM and it has a Ki value of 4.1 μM. 2-Chloro-5,6-diphenylpyrazine has been shown to inhibit cancer cell proliferation in vitro and in vivo. It inhibits the growth of colon cancer cells HCT116 with an IC50 of 5 μM when used at a concentration of 10 μM or higher. 2-Chloro-5,6-diphenylpyrazine also inhibits the growth of prostate cancer cells PC3 with an IC50 of 7 μM when used at a concentration of 10 μM or higher.