6-Chloro-2-pyridinamine45644-21-130 % similar 2-Bromo-6-chloropyridine5140-72-730 % similar 2,4,5-Trichloropyrimidine5750-76-530 % similar 3,4,6-Trichloropyridazine6082-66-230 % similar 6-Chloro-3-nitropyridine-2-carbonitrile93683-65-930 % similar