CpCDPK1/TgCDPK1-IN-2 (Compound 7r) is a CpCDPK1 and TgCDPK1 inhibitor with IC 50 values of 12 and 5 nM, respectively. CpCDPK1/TgCDPK1-IN-2 can be used in the research of apicomplexan protozoa-related diseases, such as the research of T. gondii , C. parvum and C. hominus infection.