Benzaldehyde, 3,4-dihydroxy-
Protocatechualdehyde
3,4-Dihydroxybenzaldehyde
3,4-Dihydroxybenzenecarbonal
Protocatechuic aldehyde
4-Formyl-1,2-dihydroxybenzene
Rancinamycin IV
1,2-Dihydroxy-4-formylbenzene
NC 033
4-Formyl-1,2-benzenediol
Catechaldehyde
NSC 22961
4-Formylcatechol
3,4-Dihydroxybezaldehyde
4-Formyl-2-hydroxyphenol