- Chemical Name:3,4-Dihydroxybenzoic acid
- CAS No.:99-50-3
- Molecular Formula:C7H6O4
- Molecular Weight:154.122
- Hs Code.:29182990
- European Community (EC) Number:202-760-0
- NSC Number:16631
- UNII:36R5QJ8L4B
- DSSTox Substance ID:DTXSID4021212
- Nikkaji Number:J11.618A
- Wikipedia:Protocatechuic acid
- Wikidata:Q418599
- Pharos Ligand ID:WGB329FV2GX1
- Metabolomics Workbench ID:37892
- ChEMBL ID:CHEMBL37537
- Mol file:99-50-3.mol
Synonyms:3,4-dihydroxybenzoic acid;protocatechuic acid;protocatechuic acid, carboxy-14C-labeled;protocatechuic acid, monosodium salt