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