Date published: 2026-4-5

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Protocatechuic acid (CAS 99-50-3)

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Alternate Names:
3,4-Dihydroxybenzoic acid
Application:
Protocatechuic acid is a phenolic acid antioxidant and chemopreventive agent
CAS Number:
99-50-3
Purity:
≥98%
Molecular Weight:
154.12
Molecular Formula:
C7H6O4
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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Protocatechuic Acid is a phenolic acid antioxidant present in fruits, vegetables and nuts. It is a metabolite of polyphenols such as Phloretin and Quercetin. It may protect skin against blue light and other environmental assaults. Protocatechuic Acid has been found to be an efficacious chemopreventive agent in several carcinogenesis models.


Protocatechuic acid (CAS 99-50-3) References

  1. Protocatechuic acid inhibits osteoclast differentiation and stimulates apoptosis in mature osteoclasts.  |  Wu, YX., et al. 2016. Biomed Pharmacother. 82: 399-405. PMID: 27470378
  2. Protocatechuic acid protects against menadione-induced liver damage by up-regulating nuclear erythroid-related factor 2.  |  Ibitoye, OB. and Ajiboye, TO. 2020. Drug Chem Toxicol. 43: 567-573. PMID: 30585516
  3. Protocatechuic acid protects against hepatorenal toxicities in rats exposed to Furan.  |  Owumi, SE., et al. 2022. Drug Chem Toxicol. 45: 1840-1850. PMID: 33645375
  4. Production of Protocatechuic Acid from p-Hydroxyphenyl (H) Units and Related Aromatic Compounds Using an Aspergillus niger Cell Factory.  |  Lubbers, RJM. and de Vries, RP. 2021. mBio. 12: e0039121. PMID: 34154420
  5. Protocatechuic acid attenuates isoproterenol-induced cardiac hypertrophy via downregulation of ROCK1-Sp1-PKCγ axis.  |  Bai, L., et al. 2021. Sci Rep. 11: 17343. PMID: 34462460
  6. Protocatechuic acid protects mice from influenza A virus infection.  |  Wang, Q., et al. 2022. Eur J Clin Microbiol Infect Dis. 41: 589-596. PMID: 35067799
  7. Protocatechuic acid protects hepatocytes against hydrogen peroxide-induced oxidative stress.  |  Lee, WJ. and Lee, SH. 2022. Curr Res Food Sci. 5: 222-227. PMID: 35106486
  8. Protocatechuic acid protects against thioacetamide-induced chronic liver injury and encephalopathy in mice via modulating mTOR, p53 and the IL-6/ IL-17/ IL-23 immunoinflammatory pathway.  |  Abdelrahman, RS. and El-Tanbouly, GS. 2022. Toxicol Appl Pharmacol. 440: 115931. PMID: 35202709
  9. Protocatechuic acid counteracts oxidative stress and inflammation in carrageenan-induced paw edema in mice.  |  Albarakati, AJA. 2022. Environ Sci Pollut Res Int. 29: 56393-56402. PMID: 35332456
  10. Does Protocatechuic Acid Affect the Activity of Commonly Used Antibiotics and Antifungals?  |  Fifere, A., et al. 2022. Life (Basel). 12: PMID: 35888098
  11. Protocatechuic Acid-Based Supramolecular Hydrogel Targets SerpinB9 to Achieve Local Chemotherapy for OSCC.  |  Li, Z., et al. 2022. ACS Appl Mater Interfaces. 14: 36379-36394. PMID: 35904511
  12. Protocatechuic acid: A novel detoxication agent of fumonisin B1 for poultry industry.  |  Wang, F., et al. 2022. Front Vet Sci. 9: 923238. PMID: 35958305
  13. Protocatechuic Acid Delays Postovulatory Oocyte Ageing in Mouse.  |  Li, LJ., et al. 2023. Mol Nutr Food Res. 67: e2200363. PMID: 36537853
  14. Protocatechuic acid, ferulic acid and relevant defense enzymes correlate closely with walnut resistance to Xanthomonas arboricola pv. juglandis.  |  Zhang, Q., et al. 2022. BMC Plant Biol. 22: 598. PMID: 36539704

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

Protocatechuic acid, 25 g

sc-205818
25 g
$132.00

Protocatechuic acid, 50 g

sc-205818A
50 g
$264.00