5-Amino-3-(difluoromethyl)-2-(trifluoromethoxy)pyridine-4-carboxylic acid
3-Amino-5-(difluoromethyl)-4-(trifluoromethoxy)pyridine-2-carboxylic acid
Ethyl 4-amino-2-iodo-5-(trifluoromethoxy)pyridine-3-carboxylate
5-Amino-4-(difluoromethyl)-2-(trifluoromethoxy)pyridine-3-carboxylic acid