5-Chloro-1H-pyrrolo[2,3-c]pyridine-2-carboxylic acid800401-68-730 % similar 2-Chloro-6-methylpyridine-4-carboxylic acid25462-85-530 % similar Imidazo(1,2-a)pyridine-3-carboxylic acid6200-60-830 % similar 5-Chloro-2-pyrazinecarboxylic acid36070-80-130 % similar