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

MedKoo CAT#: 558065

CAS#: 73981-34-7

Description: Kamebakaurin is isolated from leaves and stems of Radbosia serra (Maxim) Hara.

Chemical Structure

CAS# 73981-34-7

Theoretical Analysis

MedKoo Cat#: 558065
Name: Kamebakaurin
CAS#: 73981-34-7
Chemical Formula: C20H30O5
Exact Mass: 350.21
Molecular Weight: 350.45
Elemental Analysis: C, 68.55; H, 8.63; O, 22.83

Price and Availability

This product is not in stock, which may be available by custom synthesis. For cost-effective reason, minimum order is 1g (price is usually high, lead time is 2~3 months, depending on the technical challenge). Quote less than 1g will not be provided. To request quote, please email to sales @medkoo.com or click below button.
Note: Price will be listed if it is available in the future.

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Synonym: 1,7,14,20-Tetrahydroxykaur-16-en-15-one (1alpha,7alpha,14R);

IUPAC/Chemical Name: Kaur-16-en-15-one, 1,7,14,20-tetrahydroxy-, (1alpha,7alpha,14R)-


InChi Code: InChI=1S/C20H30O5/c1-10-11-4-5-12-19(9-21)13(18(2,3)7-6-14(19)22)8-15(23)20(12,16(10)24)17(11)25/h11-15,17,21-23,25H,1,4-9H2,2-3H3/t11-,12-,13+,14-,15+,17+,19-,20-/m0/s1

SMILES Code: C=C([C@H](CC1)[C@H]2O)C([C@@]32[C@H](O)C[C@]4([H])C(C)(C)CC[C@H](O)[C@@]4(CO)[C@@]31[H])=O

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: Soluble in DMSO

Shelf Life: >2 years if stored properly

Drug Formulation: This drug may be formulated in DMSO

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 350.45 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

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1: Kim JY, Kim HS, Kim YJ, Lee HK, Kim JS, Kang JS, Hong JT, Kim Y, Hwang BY, Han SB. Inhibition of TAK1 by kamebakaurin in dendritic cells. Int Immunopharmacol. 2013 Jan;15(1):138-43. doi: 10.1016/j.intimp.2012.11.004. Epub 2012 Nov 15. PubMed PMID: 23159603.

2: Wang KS, Ma J, Mi C, Li J, Lee JJ, Jin X. Kamebakaurin inhibits the expression of hypoxia-inducible factor-1α and its target genes to confer antitumor activity. Oncol Rep. 2016 Apr;35(4):2045-52. doi: 10.3892/or.2016.4576. Epub 2016 Jan 19. PubMed PMID: 26781327.

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13: Yoshioka H, Aoyagi Y, Fukuishi N, Gui MY, Jin YR, Li XW, Adachi Y, Ohno N, Takeya K, Hitotsuyanagi Y, Miura N, Nonogaki T. Suppressive effect of kamebakaurin on acetaminophen-induced hepatotoxicity by inhibiting lipid peroxidation and inflammatory response in mice. Pharmacol Rep. 2017 Oct;69(5):903-907. doi: 10.1016/j.pharep.2017.04.004. Epub 2017 Apr 12. PubMed PMID: 28624597.

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16: Lee C, Hong SS, Han XH, Jin Q, Li D, Kim TO, Kim HK, Lee J, Kwon SH, Kim YB, Lee MK, Hwang BY. A new abietane diterpenoid from Isodon inflexus. Arch Pharm Res. 2008 Nov;31(11):1381-4. doi: 10.1007/s12272-001-2120-3. Epub 2008 Nov 21. PubMed PMID: 19023532.

17: Gui MY, Aoyagi Y, Jin YR, Li XW, Hasuda T, Takeya K. Excisanin H, a novel cytotoxic 14,20-epoxy-ent-kaurene diterpenoid, and three new ent-kaurene diterpenoids from Rabdosia excisa. J Nat Prod. 2004 Mar;67(3):373-6. PubMed PMID: 15043413.

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20: Hwang BY, Lee JH, Koo TH, Kim HS, Hong YS, Ro JS, Lee KS, Lee JJ. Kaurane diterpenes from Isodon japonicus inhibit nitric oxide and prostaglandin E2 production and NF-kappaB activation in LPS-stimulated macrophage RAW264.7 cells. Planta Med. 2001 Jul;67(5):406-10. PubMed PMID: 11488452.