5-(Difluoromethyl)-4-nitro-2-(trifluoromethoxy)pyridine-3-sulfonamide
6-(Difluoromethyl)-2-nitro-3-(trifluoromethoxy)pyridine-4-sulfonamide
2-(Difluoromethyl)-3-nitro-5-(trifluoromethoxy)pyridine-4-sulfonamide
Methyl 2-(aminomethyl)-3-(trifluoromethoxy)-5-(trifluoromethyl)pyridine-4-acetate