3-(Difluoromethyl)-2-nitro-4-(trifluoromethoxy)pyridine-5-carboxylic acid
5-(Fluoromethyl)-3-methoxy-4-(trifluoromethoxy)pyridine-2-acetonitrile
3-(Fluoromethyl)-5-methoxy-2-(trifluoromethoxy)pyridine-4-acetonitrile
6-(Difluoromethyl)-2-nitro-4-(trifluoromethoxy)pyridine-3-carboxylic acid