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