Home >> SB 218078
Related Products
SB 218078 checkpoint kinase 1 (Chk1) inhibitor

Catalog No.C3012
Size Price Stock Qty
In stock

Tel: +1-832-696-8203

Email: [email protected]

Worldwide Distributors


Sample solution is provided at 25 µL, 10mM.

Quality Control

Quality Control & MSDS

View current batch:

Chemical structure

SB 218078

SB 218078 Dilution Calculator

Concentration (start)
Volume (start)
Concentration (final)
Volume (final)


SB 218078 Molarity Calculator



Chemical Properties

Cas No. 135897-06-2 SDF Download SDF
Chemical Name 9,10,11,12-tetrahydro-9,12-epoxy-1H-diindolo[1,2,3-fg:3',2',1'-kl]pyrrolo[3,4-i][1,6]benzodiazocine-1,3(2H)-dione
Canonical SMILES O=C(NC1=O)C2=C1C3=C4C5=C2C6=C(C=CC=C6)N5C7OC(CC7)N4C8=C3C=CC=C8
Formula C24H15N3O3 M.Wt 393.4
Solubility ≤5mg/ml in DMSO;5mg/ml in dimethyl formamide Storage Store at -20°C
Physical Appearance A crystalline solid Shipping Condition Evaluation sample solution : ship with blue ice.All other available size: ship with RT , or blue ice upon request
General tips For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months.


Targets:Chk1, cdc2 and PKC

IC50:15, 250 and 1000 nM for Chk1, cdc2 and PKC respectively

SB 218078 is a potent inhibitor of checkpoint kinase 1, with the IC50 values of 15, 250 and 1000 nM for Chk1, cdc2 and PKC, respectively.

In Vitro: An in vitro kinase assay found that SB 218078 could potently inhibit the phosphorylation of Chk1, with the IC50 of 15 nM. In Hela cells, SB 218078 could cause complete abrogation of G2 cell cycle arrest induced by topotecan, with the minimum concentration of 2.5 μM [1]. Besides, 15 nM SB 218078 could effectively inhibit NKG2D ligand upregulation induced by aphidicolin in fibroblasts [2]. Furthermore, treated GM02188 cells with 2.5 μM SB 218078 could inhibit the formation of HU-induced 53bp1 foci and prevent recovery from replication fork stalling induced by APH [3].

In Vivo: In Myc-induced lymphomas mouse model, treatment with SB 218078 with the dose of 5 mg/kg could promote a strong increase of γ-H2AX and apoptosis throughout the lymphoma, while having no effect on a healthy spleen [4].

Clinical trial: No data available recently

[1] Jackson J R, Gilmartin A G, Imburgia C S, et al.  An Indolocarbazole Inhibitor of Human Checkpoint Kinase (Chk1) Abrogates Cell Cycle Arrest Caused by DNA Damage[J]. Cancer Research, 2000, 60(3): 566-572.
[2] Gasser S, Orsulic S, Brown E J, et al.  The DNA damage pathway regulates innate immune system ligands of the NKG2D receptor[J]. Nature, 2005, 436(7054): 1186-1190.
[3] Alderton G K, Galbiati L, Griffith E, et al.  Regulation of mitotic entry by microcephalin and its overlap with ATR signalling[J]. Nature Cell Biology, 2006, 8(7): 725-733.
[4] Murga M, Campaner S, Lopez-Contreras A J, et al.  Exploiting oncogene-induced replicative stress for the selective killing of Myc-driven tumors[J]. Nature structural & molecular biology, 2011, 18(12): 1331-1335.