6-Bromo-3-iodo-2-(trifluoromethoxy)pyridine-4-carboxaldehyde
6-Bromo-2-cyano-3-(trifluoromethoxy)pyridine-4-carboxaldehyde
2-Amino-4-(aminomethyl)-3-chloro-5-(difluoromethyl)pyridine
2-(Fluoromethyl)-4-methyl-5-(trifluoromethoxy)pyridine-3-carboxylic acid