2-(Difluoromethyl)-3-nitro-5-(trifluoromethoxy)pyridine-6-sulfonamide
3-(Difluoromethyl)-6-nitro-4-(trifluoromethoxy)pyridine-2-sulfonyl chloride
4-(Aminomethyl)-3-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-5-acetic acid
2-(Difluoromethyl)-6-nitro-5-(trifluoromethoxy)pyridine-3-sulfonamide