my account
  Loading... Please wait...

Product Details

Monastrol | Kinesin Eg5 and mitosis inhibitor

Monastrol (254753-54-3) is a potent, cell-permeable, small molecule inhibitor of mitosis. Monastrol-arrested cells are characterized by monopolar spindles.1 Does not affect other motor proteins or tubulin. Specifically inhibits the mitotic molecular motor kinesin Eg5, a motor protein required for spindle formation (IC50 = 14 μM).2 Mimics the effect of amyloid β on long term potentiation in a cellular model of learning and memory.3 Enhances regeneration of adult axons.4


1) Mayer et al. (1999), Small molecule inhibitor of mitotic spindle bipolarity identified in a phenotype-based screen; Science, 286 971
2) Kapoor et al. (2000), Probing spindle assembly mechanisms with monastrol, a small molecule inhibitor of mitotic kinesin, Eg5; J. Cell Biol., 150 975
3) Ari et al. (2014), Alzheimer amyloid beta inhibition of Eg5/kinesin 5 reduces neurotrophin and/or reansmitter receptor function; Neurobiol. Aging, 35 1839
4) Lin et al. (2011), Inhibition of Kinesin-5, a microtubule-based motor protein, as a strategy for enhancing regeneration of adult axons; Traffic, 12 269

Focus Biomolecules supplier, chemical structure of Monastrol | Kinesin Eg5 and mitosis inhibitor | CAS 254753-54-3

Catalog#  10-2629-0005

Please note that we do not sell to individuals and that all orders placed by non-research organizations will incur a $20 restocking/refund fee.
Request Bulk Quote
Catalog Number:
Kinesin Eg5 and mitosis inhibitor
Chemical Name:
1,2,3,4-Tetrahydro-4-(3-hydroxyphenyl)-6-methyl-2-thioxo-5-pyrimidinecarboxylic acid, ethyl ester
Molecular Weight:
Molecular Formula:
Soluble in DMSO (up to 25 mg/ml) or in Ethanol (up to 25 mg/ml)
Physical Properties:
Beige solid
98% by TLC
NMR (Conforms)
Storage Temperature:
-20°C (des.)
Stable for 1 year as supplied. Solutions in DMSO or ethanol may be stored at -20°C for up to 1 month.
Shipping Code:
Materials provided by Focus Biomolecules are for laboratory research use only and are not intended for human or veterinary applications.

Focus BiomoleculesPlymouth Meeting, PA USA1-855-FOCUS21

Connect with Focus

Click the button below to add the Monastrol | Kinesin Eg5 and mitosis inhibitor to your wish list.