Ethyl 5-(difluoromethyl)-3-methyl-4-(trifluoromethyl)pyridine-2-carboxylate
Ethyl 3-(difluoromethyl)-5-methyl-2-(trifluoromethyl)pyridine-6-carboxylate
3-(Difluoromethyl)-5-methyl-4-(trifluoromethyl)pyridine-2-acetic acid
3-(Difluoromethyl)-5-methyl-2-(trifluoromethyl)pyridine-4-acetic acid