Ursolic acid


3β-Hydroxy-12-ursen-28-ic acid
Empirical Formula (Hill Notation):
CAS Number:
Molecular Weight:
Beilstein/REAXYS Number:
EC Number:
MDL number:
PubChem Substance ID:

Quality Level




292 °C (dec.) (lit.)

storage temp.


SMILES string




InChI key


Gene Information

mouse ... Ifng(15978), Nos2(18126)

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General description

Ursolic acid (UA) is a hydroxyl pentacyclic triterpenoic acid (HPTA), which exhibits anti-bacterial, anti-cancer, anti-oxidative and anti-inflammatory effects. It can also promote neuroregeneration after peripheral nerve injury. UA can enhance sleep duration by activating the GABAergic neurotransmitter system. [GABA= γ-aminobutyric acid]


Ursolic acid can be used as a starting material to synthesize ethoxycarbonylmethyl ursolate (ECU) by reacting with ethyl chloroacetate. ECU is further used as a key intermediate in the total synthesis of a biologically important compound 3-acetyl-2-[(un)substituted phenyl]-2,3-dihydro-1,3,4-oxadiazol-5-Me 3-O-acetylursolate. Ursolic acid can also be used to prepare novel heterocyclic derivatives for various activity studies.


500 mg in poly tube
100 mg in poly bottle

Biochem/physiol Actions

Triterpenoid found in a variety of fruits, including apples. Cardioprotective and anti-tumor agent. Under study as a potential Alzheimer′s disease therapeutic due to its inhibitory effect on the interactions between amyloid-β and the CD36 receptor.

Other Notes

Tandem Mass Spectrometry data independently generated by Scripps Center for Metabolomics is available to view or download in PDF. U6753.pdf Tested metabolites are featured on Scripps Center for Metabolomics METLIN Metabolite Database. To learn more, visit sigma.com/metlin.

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves


NONH for all modes of transport

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis
Certificate of Origin
Ursolic acid induces neural regeneration after sciatic nerve injury.
Liu B, et al.
Neural Regeneration Research, 8(27), 2510-2510 (2013)
Aljawharah AlQathama et al.
Biomolecules, 10(6) (2020-06-18)
We evaluate how 3-acetylation modulates the in vitro activity of ursolic acid in melanoma cells alone or in combination treatments with quercetin. Anti-proliferative studies on A375 cells and adult human dermal fibroblasts included analyses on cell cycle distribution, caspase activity...
Ursolic acid enhances pentobarbital-induced sleeping behaviors via GABAergic neurotransmission in mice.
Jeon, SJ, et al.
European Journal of Pharmacology, 762, 443-448 (2015)
Amélia M Silva et al.
Pharmaceutics, 11(8) (2019-07-28)
Oleanolic (OA) and ursolic (UA) acids are recognized triterpenoids with anti-cancer properties, showing cell-specific activity that can be enhanced when loaded into polymeric nanoparticles. The cytotoxic activity of OA and UA was assessed by Alamar Blue assay in three different...
Synthesis of novel ursolic acid heterocyclic derivatives with improved abilities of antiproliferation and induction of p53, p21waf1 and NOXA in pancreatic cancer cells
Leal AS, et al.
Bioorganic & Medicinal Chemistry, 20(19), 5774-5786 (2012)

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