Date published: 2026-6-9

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4-Phenylbutyric acid (CAS 1821-12-1)

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Alternate Names:
4-phenylbutanoic acid
Application:
4-Phenylbutyric acid is a chemical chaperone that suppresses oxidative stress
CAS Number:
1821-12-1
Molecular Weight:
164.20
Molecular Formula:
C10H12O2
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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4-Phenylbutyric acid is a chemical chaperone, which suppresses oxidative stress by attenuating endoplasmic reticulum stress. 4-Phenylbutyric acid increases the expression of type 2 deiodinase (D2), via the accumulation of Dio2 mRNA. Studies indicate that 4-Phenylbutyric acid affects genes such as Ucp-1, Ucp-3 and Pgc-1alpha in a D2-dependent manner. The activation of these genes is thought to increase T3 production. Diabetic studies conducted on mice suggest that 4-Phenylbutyric acid normalizes serum glucose levels.


4-Phenylbutyric acid (CAS 1821-12-1) References

  1. 4-Phenyl butyric acid does not generally reduce glucose levels in rodent models of diabetes.  |  Xu, TY., et al. 2010. Clin Exp Pharmacol Physiol. 37: 441-6. PMID: 19878212
  2. Effects of 4-phenylbutyric acid on the process and development of diabetic nephropathy induced in rats by streptozotocin: regulation of endoplasmic reticulum stress-oxidative activation.  |  Luo, ZF., et al. 2010. Toxicol Appl Pharmacol. 246: 49-57. PMID: 20399799
  3. The chemical chaperones tauroursodeoxycholic and 4-phenylbutyric acid accelerate thyroid hormone activation and energy expenditure.  |  da-Silva, WS., et al. 2011. FEBS Lett. 585: 539-44. PMID: 21237159
  4. 4-Phenylbutyric acid protects against lipopolysaccharide-induced bone loss by modulating autophagy in osteoclasts.  |  Park, HJ., et al. 2018. Biochem Pharmacol. 151: 9-17. PMID: 29458048
  5. 4-phenylbutyric acid attenuates endoplasmic reticulum stress-mediated apoptosis and protects the hepatocytes from intermittent hypoxia-induced injury.  |  Xin, L., et al. 2019. Sleep Breath. 23: 711-717. PMID: 30324548
  6. 4-Phenylbutyric acid enhances the mineralization of osteogenesis imperfecta iPSC-derived osteoblasts.  |  Takeyari, S., et al. 2021. J Biol Chem. 296: 100027. PMID: 33154166
  7. 4-Phenylbutyric acid protects islet β cell against cellular damage induced by glucocorticoids.  |  Zhou, X., et al. 2021. Mol Biol Rep. 48: 1659-1665. PMID: 33566227
  8. 4-phenylbutyric acid mediates therapeutic effect in systemic lupus erythematosus: Observations in an experimental murine lupus model.  |  Choi, Y., et al. 2021. Exp Ther Med. 21: 460. PMID: 33747192
  9. 4-Phenylbutyric acid, a potent endoplasmic reticulum stress inhibitor, attenuates the severity of collagen-induced arthritis in mice via inhibition of proliferation and inflammatory responses of synovial fibroblasts.  |  Choi, Y., et al. 2021. Kaohsiung J Med Sci. 37: 604-615. PMID: 33759334
  10. 4-phenylbutyric acid promotes hepatocellular carcinoma via initiating cancer stem cells through activation of PPAR-α.  |  Chen, SZ., et al. 2021. Clin Transl Med. 11: e379. PMID: 33931972
  11. Neuroprotective Effect of 4-Phenylbutyric Acid against Photo-Stress in the Retina.  |  Guzmán Mendoza, NA., et al. 2021. Antioxidants (Basel). 10: PMID: 34356380
  12. 4-Phenylbutyric acid accelerates rehabilitation of barrier function in IPEC-J2 cell monolayer model.  |  Jiang, Q., et al. 2021. Anim Nutr. 7: 1061-1069. PMID: 34738036
  13. 4-Phenylbutyric acid alleviates 3-acetyldeoxynivalenol-induced immune cells response by inhibiting endoplasmic reticulum stress in mouse spleen.  |  Jia, H., et al. 2022. Food Chem Toxicol. 164: 113002. PMID: 35413383
  14. 4-phenylbutyric acid-Identity crisis; can it act as a translation inhibitor?  |  Stein, D., et al. 2022. Aging Cell. 21: e13738. PMID: 36373957
  15. Andrographolide and 4-Phenylbutyric Acid Administration Increase the Expression of Antimicrobial Peptides Beta-Defensin-1 and Cathelicidin and Reduce Mortality in Murine Sepsis.  |  Bolatchiev, A., et al. 2022. Antibiotics (Basel). 11: PMID: 36421273

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

4-Phenylbutyric acid, 25 g

sc-232961
25 g
$53.00

4-Phenylbutyric acid, 100 g

sc-232961A
100 g
$136.00

4-Phenylbutyric acid, 500 g

sc-232961B
500 g
$418.00