2-Bromo-6-(difluoromethyl)-4-hydroxypyridine-3-sulfonamide
2-(Bromomethyl)-4-hydroxy-5-(trifluoromethoxy)pyridine-3-carboxaldehyde
6-(Difluoromethyl)-4-methyl-2-(trifluoromethoxy)pyridine-3-carboxylic acid
2-Iodo-4-nitro-3-(trifluoromethoxy)pyridine-5-sulfonamide