Are there alternatives to 5-Chloroimidazo[1,2-C]pyrimidine (CAS: 1208086-02-5) in synthesis?

In synthesis, 5-Chloroimidazo[1,2-C]pyrimidine (CAS: 1208086-02-5) can have several alternatives. Commonly used analogs include 6-chloroimidazo[1,2-C]pyrimidine and 4-chloroimidazo[1,2-C]pyrimidine. Isomers such as 5-chloro-2-methylimidazo[1,2-C]pyrimidine are also considered. Additionally, alternative reagents like 1H-imidazo[1,2-a]pyrimidin-5(2H)-one can be used as a substitute.