Ethyl 2-(difluoromethyl)-3-hydroxy-6-methoxypyridine-5-acetate
Methyl 4-(difluoromethyl)-6-hydroxy-2-methoxypyridine-3-acetate
3-(Difluoromethyl)-2-hydroxy-4-methoxypyridine-6-sulfonamide
5-(Difluoromethyl)-2-hydroxy-3-methoxypyridine-6-sulfonyl chloride