4,6-Dichloroimidazo[4,5-C]pyridine2589-12-031 % similar 4-Amino-5-bromopyrimidine1439-10-731 % similar 3,5-Dichloro-1,4-dihydropyridazin-4-imine53180-76-031 % similar 2-Amino-3,5-dichloropyrazine873-42-731 % similar 2-Amino-3-chloropyrazine6863-73-630 % similar 6-Chloro-2-fluoropurine1651-29-230 % similar