Methyl 2-(difluoromethyl)-6-fluoro-5-(trifluoromethoxy)pyridine-3-carboxylate
Methyl 2-(difluoromethyl)-6-fluoro-3-(trifluoromethoxy)pyridine-5-carboxylate
5-(Difluoromethyl)-2-fluoro-3-(trifluoromethoxy)pyridine-6-carboxylic acid
2-(Difluoromethyl)-4-fluoro-6-(trifluoromethoxy)pyridine-3-acetic acid