Methyl 3-(difluoromethyl)-6-nitro-2-(trifluoromethoxy)pyridine-4-carboxylate
Methyl 5-(difluoromethyl)-2-nitro-4-(trifluoromethoxy)pyridine-3-carboxylate
5-(Fluoromethyl)-2-methoxy-4-(trifluoromethoxy)pyridine-3-carboxylic acid
Methyl 3-(fluoromethyl)-2-methoxy-4-(trifluoromethoxy)pyridine-5-acetate