Methyl 2-(difluoromethyl)-6-nitro-3-(trifluoromethyl)pyridine-5-carboxylate
Ethyl 4-(difluoromethyl)-3-methyl-2-(trifluoromethyl)pyridine-5-carboxylate
4-(Difluoromethyl)-2-nitro-3-(trifluoromethyl)pyridine-5-carboxylic acid
4-(Difluoromethyl)-3-nitro-2-(trifluoromethyl)pyridine-6-methanol