WARNING: This product is for research use only, not for human or veterinary use.

MedKoo CAT#: 111014

CAS#: 751-03-1

Description: Obacunone is from bark of the Chinese plant Phellodendron amurense. It exhibits anti-cancer and anti-inflammatory properties. Obacunone also significantly inhibits aromatase activity in an in vitro enzyme assay with an IC50 value of 28.04 μM and is a novel activator of Nrf2.

Chemical Structure

CAS# 751-03-1

Theoretical Analysis

MedKoo Cat#: 111014
Name: Obacunone
CAS#: 751-03-1
Chemical Formula: C26H30O7
Exact Mass: 454.1992
Molecular Weight: 454.519
Elemental Analysis: C, 68.71; H, 6.65; O, 24.64

Price and Availability

Size Price Availability Quantity
10.0mg USD 450.0 2 Weeks
Bulk inquiry

Synonym: AI3-37934; CCRIS 8657; Obacunone

IUPAC/Chemical Name: (1S,3aS,4aR,4bR,6aR,11aR,11bR,13aS)-1-(furan-3-yl)-4b,7,7,11a,13a-pentamethyl-1,6a,7,11a,11b,12,13,13a-octahydrooxepino[4',3':3,4]benzo[1,2-f]oxireno[2,3-d]isochromene-3,5,9(3aH,4bH,6H)-trione


InChi Code: InChI=1S/C26H30O7/c1-22(2)16-12-17(27)25(5)15(23(16,3)9-7-18(28)32-22)6-10-24(4)19(14-8-11-30-13-14)31-21(29)20-26(24,25)33-20/h7-9,11,13,15-16,19-20H,6,10,12H2,1-5H3/t15-,16+,19+,20-,23-,24+,25+,26-/m1/s1

SMILES Code: CC1(C)OC(=O)C=C[C@@]2(C)[C@H]1CC(=O)[C@]3(C)[C@@H]2CC[C@@]4(C)[C@@H](OC(=O)[C@H]5O[C@@]345)c6cocc6

Appearance: Solid powder

Purity: >98% (or refer to the Certificate of Analysis)

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition: Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Solubility: To be determined

Shelf Life: >2 years if stored properly

Drug Formulation: To be determined

Stock Solution Storage: 0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code: 2934.99.9001

Preparing Stock Solutions

The following data is based on the product molecular weight 454.519 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Recalculate based on batch purity %
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.15 mL 5.76 mL 11.51 mL
5 mM 0.23 mL 1.15 mL 2.3 mL
10 mM 0.12 mL 0.58 mL 1.15 mL
50 mM 0.02 mL 0.12 mL 0.23 mL

Molarity Calculator

Calculate the mass, volume, or concentration required for a solution.

*When preparing stock solutions always use the batch-specific molecular weight of the product found on the vial label and SDS / CoA (available online).

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.


Dilution Calculator

Calculate the dilution required to prepare a stock solution.

1: Melong R, Tamokoue Kengne PC, Dzoyem JP, Fusi AA, Allemann E, Delie F, Bochet CG, Beifuss U, Kapche GDWF. New cytotoxic obacunone-type limonoid and others constituents from the stem bark of Carapa procera DC (Meliaceae). Nat Prod Res. 2021 May 17:1-8. doi: 10.1080/14786419.2021.1927024. Epub ahead of print. PMID: 33993799.

2: Park KR, Kim S, Cho M, Yun HM. Limonoid Triterpene, Obacunone Increases Runt- Related Transcription Factor 2 to Promote Osteoblast Differentiation and Function. Int J Mol Sci. 2021 Mar 2;22(5):2483. doi: 10.3390/ijms22052483. PMID: 33801166; PMCID: PMC7957678.

3: Huang DR, Dai CM, Li SY, Li XF. Obacunone protects retinal pigment epithelium cells from ultra-violet radiation-induced oxidative injury. Aging (Albany NY). 2021 Feb 1;13(8):11010-11025. doi: 10.18632/aging.202437. Epub 2021 Feb 1. PMID: 33535179; PMCID: PMC8109142.

4: Bai Y, Wang W, Wang L, Ma L, Zhai D, Wang F, Shi R, Liu C, Xu Q, Chen G, Lu Z. Obacunone Attenuates Liver Fibrosis with Enhancing Anti-Oxidant Effects of GPx-4 and Inhibition of EMT. Molecules. 2021 Jan 9;26(2):318. doi: 10.3390/molecules26020318. PMID: 33435504; PMCID: PMC7827035.

5: Luo X, Yu Z, Yue B, Ren J, Zhang J, Mani S, Wang Z, Dou W. Obacunone reduces inflammatory signalling and tumour occurrence in mice with chronic inflammation- induced colorectal cancer. Pharm Biol. 2020 Dec;58(1):886-897. doi: 10.1080/13880209.2020.1812673. PMID: 32878512.

6: Lang X, Zhang X, Wang D, Zhou W. In Vitro and In Vivo Metabolic Activation of Obacunone, A Bioactive and Potentially Hepatotoxic Constituent of Dictamni Cortex. Planta Med. 2020 Jul;86(10):686-695. doi: 10.1055/a-1152-8169. Epub 2020 May 4. PMID: 32365393.

7: Luo X, Yue B, Yu Z, Ren Y, Zhang J, Ren J, Wang Z, Dou W. Obacunone Protects Against Ulcerative Colitis in Mice by Modulating Gut Microbiota, Attenuating TLR4/NF-κB Signaling Cascades, and Improving Disrupted Epithelial Barriers. Front Microbiol. 2020 Mar 31;11:497. doi: 10.3389/fmicb.2020.00497. PMID: 32296403; PMCID: PMC7136403.

8: Xie J, Zhang AH, Qiu S, Zhang TL, Li XN, Yan GL, Sun H, Liu L, Wang XJ. Identification of the perturbed metabolic pathways associating with prostate cancer cells and anticancer affects of obacunone. J Proteomics. 2019 Aug 30;206:103447. doi: 10.1016/j.jprot.2019.103447. Epub 2019 Jul 19. PMID: 31326558.

9: Zhou J, Wang T, Wang H, Jiang Y, Peng S. Obacunone attenuates high glucose- induced oxidative damage in NRK-52E cells by inhibiting the activity of GSK-3β. Biochem Biophys Res Commun. 2019 May 21;513(1):226-233. doi: 10.1016/j.bbrc.2019.03.201. Epub 2019 Apr 3. PMID: 30954216.

10: Gao Y, Hou R, Liu F, Liu H, Fei Q, Han Y, Cai R, Peng C, Qi Y. Obacunone causes sustained expression of MKP-1 thus inactivating p38 MAPK to suppress pro- inflammatory mediators through intracellular MIF. J Cell Biochem. 2018 Jan;119(1):837-849. doi: 10.1002/jcb.26248. Epub 2017 Aug 3. PMID: 28657665.

11: Xu S, Chen W, Xie Q, Xu Y. Obacunone activates the Nrf2-dependent antioxidant responses. Protein Cell. 2016 Sep;7(9):684-8. doi: 10.1007/s13238-016-0297-y. PMID: 27530494; PMCID: PMC5003787.

12: Horiba T, Katsukawa M, Mita M, Sato R. Dietary obacunone supplementation stimulates muscle hypertrophy, and suppresses hyperglycemia and obesity through the TGR5 and PPARγ pathway. Biochem Biophys Res Commun. 2015 Aug 7;463(4):846-52. doi: 10.1016/j.bbrc.2015.06.022. Epub 2015 Jun 5. PMID: 26051277.

13: Murthy KN, Jayaprakasha GK, Patil BS. Cytotoxicity of obacunone and obacunone glucoside in human prostate cancer cells involves Akt-mediated programmed cell death. Toxicology. 2015 Mar 2;329:88-97. doi: 10.1016/j.tox.2015.01.008. Epub 2015 Jan 12. PMID: 25592883.

14: Kim J, Jayaprakasha GK, Patil BS. Obacunone exhibits anti-proliferative and anti-aromatase activity in vitro by inhibiting the p38 MAPK signaling pathway in MCF-7 human breast adenocarcinoma cells. Biochimie. 2014 Oct;105:36-44. doi: 10.1016/j.biochi.2014.06.002. Epub 2014 Jun 11. PMID: 24927687.

15: Vikram A, Jayaprakasha GK, Jesudhasan PR, Pillai SD, Patil BS. Obacunone represses Salmonella pathogenicity islands 1 and 2 in an envZ-dependent fashion. Appl Environ Microbiol. 2012 Oct;78(19):7012-22. doi: 10.1128/AEM.01326-12. Epub 2012 Jul 27. PMID: 22843534; PMCID: PMC3457478.

16: Chidambara Murthy KN, Jayaprakasha GK, Patil BS. Obacunone and obacunone glucoside inhibit human colon cancer (SW480) cells by the induction of apoptosis. Food Chem Toxicol. 2011 Jul;49(7):1616-25. doi: 10.1016/j.fct.2011.04.014. Epub 2011 Apr 15. PMID: 21515332.

17: Chidambara Murthy KN, Jayaprakasha GK, Patil BS. Apoptosis mediated cytotoxicity of citrus obacunone in human pancreatic cancer cells. Toxicol In Vitro. 2011 Jun;25(4):859-67. doi: 10.1016/j.tiv.2011.02.006. Epub 2011 Feb 17. PMID: 21333732.