5-Bromo-2-hydroxyisonicotinaldehyde
2-Hydroxyisonicotinaldehyde
2,6-Dichloro-3-hydroxyisonicotinaldehyde
2-Chloro-3-hydroxyisonicotinaldehyde
3-Hydroxyisonicotinaldehyde
2-Chloro-5-hydroxyisonicotinaldehyde
2-Bromo-5-hydroxyisonicotinaldehyde
