Methyl 3-(aminomethyl)-2-(difluoromethyl)-5-(trifluoromethoxy)pyridine-4-acetate
Methyl 6-(aminomethyl)-2-(difluoromethyl)-3-(trifluoromethoxy)pyridine-4-acetate
Methyl 2-(aminomethyl)-6-(difluoromethyl)-4-(trifluoromethoxy)pyridine-3-acetate
3-(Difluoromethyl)pyridine-4-sulfonyl chloride