2-Chloro-5-nitropyrimidine10320-42-030 % similar 2-Nitrothiophene609-40-530 % similar 2-Chloro-5-nitronicotinic acid42959-38-630 % similar 2-Chloro-3-nitro-5-pyridinecarboxylic acid7477-10-330 % similar 2-Chloro-5-nitroisonicotinic acid907545-47-530 % similar 5-Nitronicotinic acid2047-49-630 % similar 4-Nitro-1H-pyrazole-3-carboxylic acid5334-40-730 % similar