| Label | Id | |
|---|---|---|
| 4-Carboxy-1,2-dihydroxybenzene | http://purl.obolibrary.org/obo/CHEBI_36062 | |
| 3,4-Dihydroxybenzoic acid | http://purl.obolibrary.org/obo/CHEBI_36062 | |
| 3,4-dihydroxybenzoic acid | http://purl.obolibrary.org/obo/CHEBI_36062 | |
| 4,5-Dihydroxybenzoic acid | http://purl.obolibrary.org/obo/CHEBI_36062 | |
| Protocatechuic acid | http://purl.obolibrary.org/obo/CHEBI_36062 | |
| Protocatehuic acid | http://purl.obolibrary.org/obo/CHEBI_36062 |