4-(Aminomethyl)-6-(difluoromethyl)-2-hydroxypyridine-3-carboxylic acid
6-Amino-4-cyano-2-(difluoromethyl)pyridine-3-acetic acid
3-Amino-6-(difluoromethyl)-2-methyl-4-(trifluoromethyl)pyridine
2-Chloro-3-(difluoromethyl)-5-methyl-4-(trifluoromethyl)pyridine