- Package
- 1 g
- Purity
- 98%
- Price
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CAS Number: 99-50-3
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CAS Number
99-50-3
PubChem CID
72
Molecular Formula
C7H6O4
Molecular Weight
154.12 g/mol
Exact Mass
154.026609
InChIKey
YQUVCSBJEUQKSH-UHFFFAOYSA-N
IUPAC Name
3,4-dihydroxybenzoic acid
SMILES String
O=C(O)c1ccc(O)c(O)c1
Melting Point
221.0 °C
pKa
4.26
Vapor Pressure
Estimated very low; unit not specified
Properties are provided as catalog reference data and may be confirmed through supplier documentation when required.
Structural features
Protocatechuic Acid (CAS 99-50-3) is listed in the Pharmaceutical Intermediates portfolio, with molecular formula C7H6O4 and molecular weight 154. 12 g/mol.
Sourcing context
Catalog reference for RFQ preparation, supplier confirmation, and research chemical sourcing review.
Research use context
Intended for research-stage medicinal chemistry and intermediate synthesis workflows.
Documentation needs
COA/SDS status, availability, lead time, pack size, and shipment documentation can be confirmed during quotation.
ChEMBL reports experimental activity evidence for: Carbonic anhydrase 6 (Homo sapiens) — 2 assays; 3-dehydroquinate synthase (Escherichia coli K-12) — 2 assays; DNA polymerase beta (Rattus norvegicus) — 3 assays; Tyrosinase (Agaricus bisporus) — 3 assays; Estrogen receptor (Homo sapiens) — 2 assays. These records describe research assays and do not establish therapeutic efficacy or clinical use.
Carbonic anhydrase 6
Homo sapiens · SINGLE PROTEIN · 2 qualifying assays · 2 documents · best pChEMBL 5.33
Experimental evidence source: ChEMBL
3-dehydroquinate synthase
Escherichia coli K-12 · SINGLE PROTEIN · 2 qualifying assays · 1 documents · best pChEMBL 4.36
Experimental evidence source: ChEMBL
DNA polymerase beta
Rattus norvegicus · SINGLE PROTEIN · 3 qualifying assays · 1 documents
Experimental evidence source: ChEMBL
Tyrosinase
Agaricus bisporus · SINGLE PROTEIN · 3 qualifying assays · 2 documents
Experimental evidence source: ChEMBL
Estrogen receptor
Homo sapiens · SINGLE PROTEIN · 2 qualifying assays · 1 documents
Experimental evidence source: ChEMBL
Safety and handling reference content is available through documentation requests.
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Preliminary Safety Reference
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Safety Reference / SDS RequestCatalog navigation
Other public CAS pages in this catalog. These links support navigation across additional intermediates and do not imply equivalence, availability, or shared use.
Protocatechuic Acid is identified by CAS 99-50-3, with molecular formula C7H6O4, molecular weight 154.12, InChIKey YQUVCSBJEUQKSH-UHFFFAOYSA-N.
ChEMBL contains qualifying experimental assay evidence associated with Carbonic anhydrase 6, 3-dehydroquinate synthase, DNA polymerase beta, Tyrosinase, Estrogen receptor. These records do not establish therapeutic efficacy or clinical use.
Yes. Submit an RFQ and specify COA requirements. Lot-specific COA depends on supplier confirmation.
Yes. Supplier SDS can be requested through the RFQ workflow before handling, storage, shipment, or procurement decisions.
Availability, pack size, lead time, and pricing are confirmed through RFQ.
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