5-(Chloromethyl)-4-(difluoromethyl)-3-(trifluoromethoxy)pyridine-2-carboxylic acid
2-(Chloromethyl)-4-(trifluoromethoxy)-6-(trifluoromethyl)pyridine-3-carboxaldehyde
4-Bromo-3-(difluoromethyl)pyridine-5-acetic acid
4-Bromo-2-(difluoromethyl)pyridine-5-acetic acid