4-(Aminomethyl)-5-hydroxy-2-(trifluoromethoxy)pyridine-3-carboxylic acid
4-Hydroxy-2-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-5-methanol
2,6-Di(pyridin-4-yl)benzene-1-sulfonyl chloride
2-(Difluoromethyl)-3-methoxy-6-nitropyridine-4-sulfonyl chloride