CCT241533 is a novel, potent and selective CHK2 inhibitor with an IC50 of 3 nM and a Ki of 1.16 nM. It shows >63-fold selectivity for Chk1 over Chk2 and a panel of 84 other kinases. CCT 241533 dihydrochloride inhibits Chk2 activation in response to etoposide-induced DNA damage in HT29 cells and blocks ionizing radiation-induced apoptosis of mouse thymocytes.
Physicochemical Properties
| Molecular Formula | C23H27N4O4F |
| Molecular Weight | 442.48328 |
| Exact Mass | 442.202 |
| CAS # | 1262849-73-9 |
| Related CAS # | CCT241533 hydrochloride;1431697-96-9;CCT241533 dihydrochloride;1962925-28-5 |
| PubChem CID | 135564841 |
| Appearance | White to off-white solid powder |
| LogP | 2.68 |
| Hydrogen Bond Donor Count | 4 |
| Hydrogen Bond Acceptor Count | 9 |
| Rotatable Bond Count | 6 |
| Heavy Atom Count | 32 |
| Complexity | 629 |
| Defined Atom Stereocenter Count | 2 |
| SMILES | CC(C)([C@@H]1CNC[C@H]1NC2=NC(=NC3=CC(=C(C=C32)OC)OC)C4=C(C=CC(=C4)F)O)O |
| InChi Key | HZASIAXCPXTISQ-NVXWUHKLSA-N |
| InChi Code | InChI=1S/C23H27FN4O4/c1-23(2,30)15-10-25-11-17(15)27-21-13-8-19(31-3)20(32-4)9-16(13)26-22(28-21)14-7-12(24)5-6-18(14)29/h5-9,15,17,25,29-30H,10-11H2,1-4H3,(H,26,27,28)/t15-,17-/m1/s1 |
| Chemical Name | 4-fluoro-2-[4-[[(3S,4R)-4-(2-hydroxypropan-2-yl)pyrrolidin-3-yl]amino]-6,7-dimethoxyquinazolin-2-yl]phenol |
| HS Tariff Code | 2934.99.9001 |
| Storage |
Powder-20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month |
| Shipping Condition | Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs) |
Biological Activity
| ln Vitro | CCT241533 hydrochloride inhibits CHK2 with an IC50 of 3 nM and demonstrates negligible cross-reactivity against a panel of kinases at 1 μM. X-ray crystallography confirmed that CCT241533 interacts to CHK2 in the ATP pocket. CCT241533 reduces CHK2 activity in human tumor cell lines in response to DNA damage by suppressing CHK2 autophosphorylation at S516, band-shift mobility alterations, and HDMX degradation. CCT241533 does not enhance the cytotoxicity of various genotoxic medicines in a range of cell lines. However, CCT241533 dramatically improved the cytotoxicity of two structurally unique PARP inhibitors. pS516 CHK2 signaling was dramatically elevated by PARP inhibitor alone, and this activation was inhibited by CCT241533. As measured by SRB, the cytotoxicity (growth inhibition IC50 (GI50)) of CCT241533 in HT-29, HeLa and MCF-7 was 1.7, 2.2 and 5.1 μM, respectively [1]. CCT241533 hydrochloride is a strong CHK2 inhibitor (IC50=3 nM), 63 times more selective (IC50=190 nM) than CHK1, and has minimal hERG inhibitory action (IC50=22 μM) [2]. |
| References |
[1]. CCT241533 is a potent and selective inhibitor of CHK2 that potentiates the cytotoxicity of PARP inhibitors. Cancer Res. 2011 Jan 15;71(2):463-72. [2]. Structure-based design of potent and selective 2-(quinazolin-2-yl)phenol inhibitors of checkpoint kinase 2. J Med Chem. 2011 Jan 27;54(2):580-90. |
Solubility Data
| Solubility (In Vitro) | May dissolve in DMSO (in most cases), if not, try other solvents such as H2O, Ethanol, or DMF with a minute amount of products to avoid loss of samples |
| Solubility (In Vivo) |
Note: Listed below are some common formulations that may be used to formulate products with low water solubility (e.g. < 1 mg/mL), you may test these formulations using a minute amount of products to avoid loss of samples. Injection Formulations (e.g. IP/IV/IM/SC) Injection Formulation 1: DMSO : Tween 80： Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution → 50 μL Tween 80 → 850 μL Saline) *Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH ₂ O to obtain a clear solution. Injection Formulation 2: DMSO : PEG300 ：Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL DMSO → 400 μLPEG300 → 50 μL Tween 80 → 450 μL Saline) Injection Formulation 3: DMSO : Corn oil = 10 : 90 (i.e. 100 μL DMSO → 900 μL Corn oil) Example: Take the Injection Formulation 3 (DMSO : Corn oil = 10 : 90) as an example, if 1 mL of 2.5 mg/mL working solution is to be prepared, you can take 100 μL 25 mg/mL DMSO stock solution and add to 900 μL corn oil, mix well to obtain a clear or suspension solution (2.5 mg/mL, ready for use in animals). Injection Formulation 4: DMSO : 20% SBE-β-CD in saline = 10 : 90 [i.e. 100 μL DMSO → 900 μL (20% SBE-β-CD in saline)] *Preparation of 20% SBE-β-CD in Saline (4°C，1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution. Injection Formulation 5: 2-Hydroxypropyl-β-cyclodextrin : Saline = 50 : 50 (i.e. 500 μL 2-Hydroxypropyl-β-cyclodextrin → 500 μL Saline) Injection Formulation 6: DMSO : PEG300 : castor oil : Saline = 5 : 10 : 20 : 65 (i.e. 50 μL DMSO → 100 μLPEG300 → 200 μL castor oil → 650 μL Saline) Injection Formulation 7: Ethanol : Cremophor : Saline = 10： 10 : 80 (i.e. 100 μL Ethanol → 100 μL Cremophor → 800 μL Saline) Injection Formulation 8: Dissolve in Cremophor/Ethanol (50 : 50), then diluted by Saline Injection Formulation 9: EtOH : Corn oil = 10 : 90 (i.e. 100 μL EtOH → 900 μL Corn oil) Injection Formulation 10: EtOH : PEG300：Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL EtOH → 400 μLPEG300 → 50 μL Tween 80 → 450 μL Saline) Oral Formulations Oral Formulation 1: Suspend in 0.5% CMC Na (carboxymethylcellulose sodium) Oral Formulation 2: Suspend in 0.5% Carboxymethyl cellulose Example: Take the Oral Formulation 1 (Suspend in 0.5% CMC Na) as an example, if 100 mL of 2.5 mg/mL working solution is to be prepared, you can first prepare 0.5% CMC Na solution by measuring 0.5 g CMC Na and dissolve it in 100 mL ddH2O to obtain a clear solution; then add 250 mg of the product to 100 mL 0.5% CMC Na solution, to make the suspension solution (2.5 mg/mL, ready for use in animals). Oral Formulation 3: Dissolved in PEG400 Oral Formulation 4: Suspend in 0.2% Carboxymethyl cellulose Oral Formulation 5: Dissolve in 0.25% Tween 80 and 0.5% Carboxymethyl cellulose Oral Formulation 6: Mixing with food powders Note: Please be aware that the above formulations are for reference only. InvivoChem strongly recommends customers to read literature methods/protocols carefully before determining which formulation you should use for in vivo studies, as different compounds have different solubility properties and have to be formulated differently. (Please use freshly prepared in vivo formulations for optimal results.) |
| Preparing Stock Solutions | 1 mg | 5 mg | 10 mg | |
| 1 mM | 2.2600 mL | 11.2999 mL | 22.5999 mL | |
| 5 mM | 0.4520 mL | 2.2600 mL | 4.5200 mL | |
| 10 mM | 0.2260 mL | 1.1300 mL | 2.2600 mL |