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

MedKoo CAT#: 201210

CAS#: 488832-69-5

Description: Elesclomol, also known as STA-4783, is a HSP-90 Inhibitor, and is a small-molecule bis(thio-hydrazide amide) with oxidative stress induction, pro-apoptotic, and potential antineoplastic activities. Elesclomol induces oxidative stress, creating high levels of reactive oxygen species (ROS), such as hydrogen peroxide, in both cancer cells and normal cells. Because tumor cells have elevated levels of ROS compared to normal cells, the increase in oxidative stress beyond baseline levels elevates ROS beyond sustainable levels, exhausting tumor cell antioxidant capacity, which may result in the induction of the mitochondrial apoptosis pathway.

Chemical Structure

CAS# 488832-69-5

Theoretical Analysis

MedKoo Cat#: 201210
Name: Elesclomol
CAS#: 488832-69-5
Chemical Formula: C19H20N4O2S2
Exact Mass: 400.10277
Molecular Weight: 400.52
Elemental Analysis: C, 56.98; H, 5.03; N, 13.99; O, 7.99; S, 16.01

Size Price Shipping out time Quantity
25mg USD 110 2 Weeks
50mg USD 190 2 Weeks
100mg USD 350 2 Weeks
200mg USD 550 2 Weeks
500mg USD 1250 2 Weeks
1g USD 1950 2 Weeks
2g USD 3250 2 Weeks
5g USD 5950 2 Weeks
Inquire bulk and customized quantity

Pricing updated 2021-03-07. Prices are subject to change without notice.

Elesclomol is in stock.

Synonym: STA4783; STA-4783; STA 4783, Elesclomol.

IUPAC/Chemical Name: N'1,N'3-dimethyl-N'1,N'3-di(phenylcarbonothioyl)malonohydrazide


InChi Code: InChI=1S/C19H20N4O2S2/c1-22(18(26)14-9-5-3-6-10-14)20-16(24)13-17(25)21-23(2)19(27)15-11-7-4-8-12-15/h3-12H,13H2,1-2H3,(H,20,24)(H,21,25)


Solid powder

>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).

Soluble in DMSO, not in water

Shelf Life:
>5 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:

Handling Instructions:

Preparing Stock Solutions

The following data is based on the product molecular weight 400.52 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.

Select a batch to recalculate based on the batch molecular weight:
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: Blackman RK, Cheung-Ong K, Gebbia M, Proia DA, He S, Kepros J, Jonneaux A, Marchetti P, Kluza J, Rao PE, Wada Y, Giaever G, Nislow C. Mitochondrial electron transport is the cellular target of the oncology drug elesclomol. PLoS One. 2012;7(1):e29798. Epub 2012 Jan 11. PubMed PMID: 22253786; PubMed Central PMCID: PMC3256171.

2: Wu L, Zhou L, Liu DQ, Vogt FG, Kord AS. LC-MS/MS and density functional theory study of copper(II) and nickel(II) chelating complexes of elesclomol (a novel anticancer agent). J Pharm Biomed Anal. 2011 Jan 25;54(2):331-6. Epub 2010 Sep 15. PubMed PMID: 20933353.

3: O'Day S, Gonzalez R, Lawson D, Weber R, Hutchins L, Anderson C, Haddad J, Kong S, Williams A, Jacobson E. Phase II, randomized, controlled, double-blinded trial of weekly elesclomol plus paclitaxel versus paclitaxel alone for stage IV metastatic melanoma. J Clin Oncol. 2009 Nov 10;27(32):5452-8. Epub 2009 Oct 13. PubMed PMID: 19826135.

4: Qu Y, Wang J, Sim MS, Liu B, Giuliano A, Barsoum J, Cui X. Elesclomol, counteracted by Akt survival signaling, enhances the apoptotic effect of chemotherapy drugs in breast cancer cells. Breast Cancer Res Treat. 2010 Jun;121(2):311-21. Epub 2009 Jul 16. PubMed PMID: 19609669.

5: Wangpaichitr M, Wu C, You M, Maher JC, Dinh V, Feun LG, Savaraj N. N',N'-Dimethyl-N',N'-bis(phenylcarbonothioyl) Propanedihydrazide (Elesclomol) Selectively Kills Cisplatin Resistant Lung Cancer Cells through Reactive Oxygen Species (ROS). Cancers (Basel). 2009;1(1):23-38. PubMed PMID: 20535236; PubMed Central PMCID: PMC2882109.

6: Kirshner JR, He S, Balasubramanyam V, Kepros J, Yang CY, Zhang M, Du Z, Barsoum J, Bertin J. Elesclomol induces cancer cell apoptosis through oxidative stress. Mol Cancer Ther. 2008 Aug;7(8):2319-27. PubMed PMID: 18723479.

7: Molecule of the month. Elesclomol and obatoclax mesylate. Drug News Perspect. 2008 Mar;21(2):123-4. PubMed PMID: 18389103.


10mg / Not available