3-(Chloromethyl)-4-hydroxy-2-(trifluoromethoxy)pyridine-5-carboxylic acid
4-(Aminomethyl)-3-hydroxy-5-methyl-2-(trifluoromethoxy)pyridine
3-(Chloromethyl)-2-hydroxy-5-(trifluoromethoxy)pyridine-6-carboxylic acid
2-(Fluoromethyl)-5-hydroxy-4-methyl-3-(trifluoromethoxy)pyridine