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SB-743921 is a kinesin spindle protein inhibitor with IC50 of 0.2 nM, 0.07 nM, 1.7 nM, 0.06 nM and 14.4 nM in SKOV3, Colo205, MV522, MX1 and P388 cell lines, respectively. SB-743921 selectively inhibits kinesin spindle protein (KSP), an important protein involved in the early stages of mitosis that is expressed in proliferating cells. SB 743921 blocks assembly of a functional mitotic spindle, thereby causing cell cycle arrest in mitosis and subsequent cell death. SB-743921 has significant efficacy in a broad spectrum of tumor models differing from that of taxanes. The maximum-tolerated dose (MTD) of SB-743921 as a 1-h infusion every 21 days was established as 4 mg/m(2). SB-743921 has entered in a Phase I clinical trial in the treatment of cancer.
| Molecular Weight | 553.52 |
| Formula | C31H33N2O3.HCl |
| CAS Number | 940929-33-9 |
| Solubility (25°C) | DMSO ≥ 60 mg/mL Ethanol ≥ 60 mg/mL |
| Storage |
Powder -20°C 3 years ; 4°C 2 years In solvent -80°C 6 months ; -20°C 1 month |
| Related Kinesin Products |
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| AZD4877
AZD4877 is another isostere to Ispinesiband also a kinesin spindle protein (Eg5) inhibitor with IC50 of 2 nM.AZD4877 arrests cell mitosis, leads to the formation of the monopolar spindle phenotype and induces apoptosis. |
| Filanesib TFA
Filanesib TFA (ARRY-520 TFA) is a selective kinesin spindle protein (KSP) inhibitor, with an IC50 of 6 nM for human KSP. |
| Filanesib hydrochloride
Filanesib (ARRY-520) hydrochloride is a selective and noncompetitive kinesin spindle protein (KSP) inhibitor, with an IC50 of 6 nM for human KSP. Filanesib induces cell death by apoptosis in vitro. |
| Eg5-IN-1
Eg5-IN-1 is a potent kinesin family motor protein (Eg5) inhibitor with an IC50 value of 1.97 µM. |
| PVZB-1194
PVZB-1194 is a biphenyl-type inhibitor of kinesin Eg5 that induces apoptosis by inhibiting Eg5 ATPase activity and shows potent kinesin spindle protein (KSP) inhibition only in the presence of microtubules, with anticancer activity. |
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