Methyl 5-amino-2-methyl-4-(trifluoromethoxy)pyridine-3-acetate
Methyl 5-amino-2-methyl-3-(trifluoromethoxy)pyridine-4-acetate
Methyl 5-amino-4-methyl-2-(trifluoromethoxy)pyridine-3-acetate
Methyl 5-amino-4-methyl-3-(trifluoromethoxy)pyridine-2-acetate