Methyl 3-(difluoromethyl)-5-fluoro-2-methylpyridine-4-carboxylate
Methyl 6-(difluoromethyl)-2-fluoro-4-methylpyridine-3-carboxylate
Methyl 2-(difluoromethyl)-3-fluoro-5-methylpyridine-6-carboxylate
6-(Difluoromethyl)-2-fluoro-3-methylpyridine-4-acetic acid