Methyl 2-methyl-6-nitro-3-(trifluoromethoxy)pyridine-4-carboxylate
3-(Chloromethyl)-5-methoxy-2-(trifluoromethoxy)pyridine-4-carboxylic acid
Methyl 6-methyl-3-nitro-4-(trifluoromethoxy)pyridine-2-carboxylate
5-(Chloromethyl)-4-methoxy-3-(trifluoromethoxy)pyridine-2-carboxylic acid