Methyl 4-cyano-3-(difluoromethyl)-6-methoxypyridine-2-acetate
Methyl 3-cyano-4-(difluoromethyl)-6-methoxypyridine-2-acetate
4-Cyano-2-(difluoromethyl)-5-methoxypyridine-3-carbonyl chloride
3-Cyano-2-(difluoromethyl)-5-methoxypyridine-4-carbonyl chloride