(3-Fluoropyridin-2-yl)methanamine dihydrochloride312904-49-731 % similar 2-Chloro-4-(chloromethyl)pyridine101990-73-230 % similar 2-(Chloromethyl)-4,6-dimethoxypyrimidine114108-86-030 % similar 5-Chloromethyl-1H-tetrazole55408-11-230 % similar