3,4-Dihydroxy-2-(trifluoromethoxy)pyridine-5-carboxaldehyde
2,6-Dihydroxy-3-(trifluoromethoxy)pyridine-4-carboxaldehyde
3,6-Dihydroxy-4-(trifluoromethoxy)pyridine-2-carboxaldehyde
6-Amino-4-bromo-2-(fluoromethyl)-3-(trifluoromethoxy)pyridine
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