2,4-Dichloro-5-methoxypyrimidine19646-07-231 % similar 2,4-Dichloropyrido[3,2-D]pyrimidine39551-54-731 % similar 2-Chloro-1-methyl-1H-imidazole253453-91-731 % similar 2,4,6-Trichloro-5-pyrimidinecarboxaldehyde50270-27-431 % similar 3,5,6-Trichloro-[1,2,4]triazine873-41-630 % similar 5-Chloro-1-methyl-4-nitroimidazole4897-25-030 % similar Caffeine58-08-230 % similar