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E1286

Sigma-Aldrich

Eeyarestatin I

≥98% (HPLC)

Synonym(s):

3-(4-Chlorophenyl)-4-[[[(4-chlorophenyl)amino]carbonyl]hydroxyamino]-5,5-dimethyl-2-oxo-1-imidazolidineacetic acid 2-[3-(5-nitro-2-furanyl)-2-propen-1-ylidene]hydrazide

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About This Item

Empirical Formula (Hill Notation):
C27H25Cl2N7O7
CAS Number:
Molecular Weight:
630.44
UNSPSC Code:
12352204
NACRES:
NA.77

biological source

synthetic (organic)

Assay

≥98% (HPLC)

form

powder

storage condition

desiccated

solubility

DMSO: 5 mg/mL

storage temp.

2-8°C

InChI

1S/C27H25Cl2N7O7/c1-27(2)24(35(40)25(38)31-19-9-5-17(28)6-10-19)34(20-11-7-18(29)8-12-20)26(39)33(27)16-22(37)32-30-15-3-4-21-13-14-23(43-21)36(41)42/h3-15,24,40H,16H2,1-2H3,(H,31,38)(H,32,37)

InChI key

JTUXTPWYZXWOIB-UHFFFAOYSA-N

Biochem/physiol Actions

Eeyarestatin I is a potent inhibitor of endoplasmic reticulum associated protein degradation (ERAD). Specifically targets the p97-associated deubiquinating process (PAD) and inhibits ataxin-3 (atx3)-dependent deubiquitination. Also inhibits Sec61-mediated protein translocation at the ER. Displays cytotoxic activity preferentially against cancer cells; induces cell death via the proapoptotic protein NOXA.
Eeyarestatin I or Eer1 promotes transcriptional activation of the pro-apoptotic protein NOXA by inducing activation of the NOXA transcription factors ATF3 and ATF4 and by inhibiting the degradation of histone H2A by blocking its ubiquitination.

Other Notes

This product is a mixture of E/Z imine isomers

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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The ubiquitin-proteasome system has recently emerged as a major target for drug development in cancer therapy. The proteasome inhibitor bortezomib has clinical activity in multiple myeloma and mantle cell lymphoma. Here we report that Eeyarestatin I (EerI), a chemical inhibitor
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