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Sigma-Aldrich

Eg5 Inhibitor III, Dimethylenastron

The Eg5 Inhibitor III, Dimethylenastron, also referenced under CAS 863774-58-7, controls the biological activity of Eg5. This small molecule/inhibitor is primarily used for Membrane applications.

Synonym(s):

Eg5 Inhibitor III, Dimethylenastron, 7,7-Dimethyl-4-(3-hydroxyphenyl)-5-oxo-3,4,5,6,7,8-hexahydroquinazolin-2(1H)-thione

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About This Item

Empirical Formula (Hill Notation):
C16H18N2O2S
CAS Number:
863774-58-7
Molecular Weight:
302.39
UNSPSC Code:
12352200
NACRES:
NA.77

Quality Level

100

assay

≥95% (HPLC)

form

solid

manufacturer/tradename

Calbiochem®

storage condition

OK to freeze
protect from light

color

white to light yellow

solubility

DMSO: 10 mg/mL
methanol: 5 mg/mL

shipped in

ambient

storage temp.

2-8°C

InChI

1S/C16H18N2O2S/c1-16(2)7-11-13(12(20)8-16)14(18-15(21)17-11)9-4-3-5-10(19)6-9/h3-6,14,19H,7-8H2,1-2H3,(H2,17,18,21)

InChI key

RUOOPLOUUAYNPY-UHFFFAOYSA-N

General description

A cell-permeable quinazoline-thione compound that acts as a potent, specific, and reversible inhibitor of the microtubule-stimulated ATPase activity of the mitotic motor, Eg5 (IC50 = 200 nM). Exhibits little effect on the ATPase activity of kinesin-1, -4, -7 and -10 and is ~100-fold more potent than Monastrol (Cat. No. 475879). Also inhibits bipolar spindle formation in both HeLa cells and in Xenopus egg extracts and induces cell cycle arrest (~1 µM). Shown to induce mitotic arrest and apoptosis and upregulate Hsp70 in human multiple myeloma cells.
A cell-permeable quinazoline-thione compound that acts as a potent, specific, and reversible inhibitor of the microtubule-stimulated ATPase activity of the mitotic motor, Eg5 (IC50 = 200 nM). Exhibits little effect on the ATPase activity of kinesin-1, -4, -7 and -10 and is ~100-fold more potent than Monastrol (Cat. No. 475879). Also inhibits bipolar spindle formation in both HeLa cells and in Xenopus egg extracts and induces cell cycle arrest (~1 µM). Shown to induce mitotic arrest and apoptosis and upregulate Hsp70 in human multiple myeloma cells.

Biochem/physiol Actions

Cell permeable: yes
Primary Target
Microtubule-stimulated ATPase activity of the mitotic motor
Product does not compete with ATP.
Reversible: yes
Target IC50: 200 nM inhibiting the microtubule-stimulated ATPase activity of the mitotic motor, Eg5

Packaging

Packaged under inert gas

Warning

Toxicity: Harmful (C)

Reconstitution

Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 6 months at -20°C.

Other Notes

Liu, M., et al. 2006. J. Biol Chem.in press.
Gartner, M., et al. 2005. Chembiochem6, 1173.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

wgk_germany

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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Roshan L Shrestha et al.
The Journal of cell biology, 220(4) (2021-02-24)
Chromosomal instability (CIN) is a hallmark of many cancers. Restricting the localization of centromeric histone H3 variant CENP-A to centromeres prevents CIN. CENP-A overexpression (OE) and mislocalization have been observed in cancers and correlate with poor prognosis; however, the molecular

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