5-Amino-2-(difluoromethyl)-3-(trifluoromethoxy)pyridine-4-carboxylic acid
4-Bromo-5-chloro-2-(difluoromethyl)-3-(trifluoromethoxy)pyridine
3-Bromo-2-cyano-5-(trifluoromethoxy)pyridine-6-acetic acid
4-Bromo-3-chloro-5-(difluoromethyl)-2-(trifluoromethoxy)pyridine