2-Methoxy-6-nitro-3-(trifluoromethoxy)pyridine-4-carboxylic acid
5-(Difluoromethyl)-2-methoxy-4-(trifluoromethoxy)-3-(trifluoromethyl)pyridine
5-Methoxy-2-nitro-3-(trifluoromethoxy)pyridine-4-methanol
4-(Difluoromethyl)-5-methoxy-2-(trifluoromethoxy)-3-(trifluoromethyl)pyridine