tert-Butyl 2-carbamoylpyridin-3-ylcarbamate
Methyl 3-fluoro-2-(trifluoromethoxy)-4-(trifluoromethyl)pyridine-5-carboxylate
2-Bromo-6-(difluoromethyl)-3-methoxypyridine-5-acetic acid
3-(Chloromethyl)-5-fluoro-2-(trifluoromethoxy)pyridine-6-acetic acid