2,4,6-Trichloro-5-pyrimidinecarboxaldehyde50270-27-431 % similar 2-Chloro-4,6-dimethylpyrimidine4472-44-030 % similar 3,5,6-Trichloro-[1,2,4]triazine873-41-630 % similar 2,4-Dichloro-6-methyl-5-nitropyrimidine13162-26-030 % similar