4-(Difluoromethyl)-5-nitropyridine-2-sulfonamide
N'-((2-Hydroxynaphthalen-1-yl)methylene)isonicotinohydrazide
5-Nitro-4-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-3-carbonyl chloride
Ethyl 4-(bromomethyl)-3-(difluoromethyl)-5-(trifluoromethoxy)pyridine-2-carboxylate