Methyl 6-(difluoromethyl)-4-fluoro-3-hydroxypyridine-2-carboxylate
2-(Difluoromethyl)-3-fluoro-5-methoxypyridine-6-acetic acid
Methyl 2-(difluoromethyl)-5-fluoro-6-hydroxypyridine-3-acetate
Methyl 2-(difluoromethyl)-6-fluoro-5-methoxypyridine-3-acetate