5-(Difluoromethyl)-2-nitro-3-(trifluoromethoxy)pyridine-6-acetic acid
2-Methyl-5-nitro-6-(trifluoromethoxy)pyridine-3-sulfonyl chloride
4-(Difluoromethyl)-3-nitro-6-(trifluoromethoxy)pyridine-2-acetic acid
2-(Bromomethyl)-4-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-6-carboxylic acid