4-(4-Cyanopyridin-2-yl)benzaldehyde

4-(3-Cyanopyridin-2-yl)benzaldehyde

4-(6-Hydroxypyridin-2-yl)benzaldehyde

4-(5-Hydroxypyridin-2-yl)benzaldehyde

2-(4-Formylphenyl)pyridine-4-carbonitrile, 4-(4-Cyanopyridin-2-yl)benzaldehyde