CGK 733 Chemical Structure

CGK 733 Chemical Structure
Molecular Weight: 555.84

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Product Information

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Product Description

Biological Activity

Description CGK 733 is a potent and selective inhibitor of ATM/ATR with IC50 of ~200 nM.
Targets ATM [1] ATR [1]
IC50 200 nM 200 nM
In vitro CGK733 is able to confer robust growth to senescent cells that have ceased proliferation. Senescence-associated β-galactosidase (SA–β-gal) activity disappears in CGK733-treated cells. CGK733 shows greater potency in inhibiting ATM/ATR than LY294002 (IC50 , ~5 μM for ATM and ATR), a pan-inhibitor of PI3K and PIKKs. [1] CGK733 (30 μM) treated for 24h causes ~60% cell death in senescent MCF-7 cells. [2] CGK733 (20 μM) induces the loss of cyclin D1 via the ubiquitin- dependent proteasomal degradation pathway in MCF-7 and T47D breast cancer cell lines. CGK733 at concentrations ranging from 0.6- 40 μM, inhibits proliferation of MCF-7 and T47D estrogen receptor (ER) positive breast cancer cells, MDA-MB436 ER negative breast cancer cells, LnCap pros-tate cancer cells and HCT116 colon cancer cells. Furthermore, CGK733 also suppresses proliferation of non- transformed mouse BALB/c 3T3 embryonic fibroblast cells. The CGK733-mediated inhibition of proliferation is dose dependent and significant at doses as low as 2.5 μM. [3]
In vivo

Protocol(Only for Reference)

Cell Assay: [3]

Cell lines Human breast cancers cell line MCF-7
Concentrations ~20 μM
Incubation Time 2 days
Method Cells are seeded in 96-well plates at a predetermined, optimal cell density to ensure exponential growth for duration of the assay. After a 24 h preincubation, growth medium is replaced with experimental medium containing the appropriate drug concentrations or 0.1% (v/v) vehicle control. After a 48 h incubation, cell proliferation is estimated using the sulforhodamine B colorimetric assay.

Conversion of different model animals based on BSA (Value based on data from FDA Draft Guidelines)

SpeciesMouseRatRabbitGuinea pigHamsterDog
Weight (kg)
Body Surface Area (m2)0.0070.0250.
Km factor36128520
Animal A (mg/kg) = Animal B (mg/kg) multiplied by  Animal B Km
Animal A Km

For example, to modify the dose of resveratrol used for a mouse (22.4 mg/kg) to a dose based on the BSA for a rat, multiply 22.4 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for resveratrol of 11.2 mg/kg.

Rat dose (mg/kg) = mouse dose (22.4 mg/kg) ×  mouse Km(3)  = 11.2 mg/kg
rat Km(6)


[1] Won J, et al. Nat Chem Biol, 2006, 2(7), 369-374.

[2] Crescenzi E, et al. Clin Cancer Res, 2008, 14(6), 1877-1887.

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Chemical Information

Download CGK 733 SDF
Molecular Weight (MW) 555.84


CAS No. 905973-89-9
Storage 3 years -20℃powder
2 years -80℃in solvent
Synonyms N/A
Solubility (25°C) * In vitro DMSO 100 mg/mL (179.9 mM)
Water <1 mg/mL
Ethanol <1 mg/mL
* <1 mg/ml means slightly soluble or insoluble.
* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.
Chemical Name Benzeneacetamide, α-phenyl-N-[2,2,2-trichloro-1-[[[(4-fluoro-3-nitrophenyl)amino]thioxomethyl]amino]ethyl]-

Tech Support

Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.

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Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID
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