2-Phenyl-1H-pyrrolo[2,3-b]pyridine-4-carboxaldehyde
1H-pyrrolo[3,2-b]pyridine-7-carboxaldehyde
1H-pyrrolo[3,2-b]pyridine-5-carboxaldehyde
4-Chloro-5-methoxypyridine-3-carboxaldehyde
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