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Purity: ≥98%
Ceralasertib (formerly AZD6738), a morpholino-pyrimidine-based DNA damage repair agent, is a potent, orally bioavailable and selective inhibitor of ATR (ataxia telangiectasia and rad3 related) kinase with potential antitumor activity. Its IC50 for ATR inhibition is 1 nM. The serine/threonine protein kinase ATR is upregulated in a number of different types of cancer cells. Phase I clinical trials are presently investigating it as a potential cancer treatment.
Targets |
ATR ( IC50 = 1 nM ); PI3Kδ ( IC50 = 6.8 μM ); DYRK ( IC50 = 10.8 μM )
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ln Vitro |
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ln Vivo |
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Enzyme Assay |
AZD6738 is a potent inhibitor of ATR kinase activity, with an IC50 of 0.001 μM against the isolated enzyme and 0.074 μM against the phosphorylation of CHK1 in cells that is dependent on ATR kinase.
ATR and ATM are DNA damage signaling kinases that phosphorylate several thousand substrates. ATR kinase activity is increased at damaged replication forks and resected DNA double-strand breaks (DSBs). ATM kinase activity is increased at DSBs. ATM has been widely studied since ataxia telangiectasia individuals who express no ATM protein are the most radiosensitive patients identified. Since ATM is not an essential protein, it is widely believed that ATM kinase inhibitors will be well-tolerated in the clinic. ATR has been widely studied, but advances have been complicated by the finding that ATR is an essential protein and it is widely believed that ATR kinase inhibitors will be toxic in the clinic. |
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Cell Assay |
Ceralasertib (AZD6738) is diluted in DMSO to the appropriate working concentrations after being dissolved at a 30 mM concentration. For Ceralasertib (AZD6738) dose response experiments, the final DMSO concentration in media for all conditions and controls is 0.1%; for Ceralasertib (AZD6738) + chemotherapy viability experiments, it is 0.05%; and for all experiments involving 0.3 μM and 1.0 μM doses of Ceralasertib (AZD6738), it is 0.025%[1].
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Animal Protocol |
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References |
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Additional Infomation |
Ceralasertib is under investigation in clinical trial NCT03682289 (Phase II Trial of AZD6738 Alone and in Combination With Olaparib).
Ceralasertib is an orally available morpholino-pyrimidine-based inhibitor of ataxia telangiectasia and rad3 related (ATR) kinase, with potential antineoplastic activity. Upon oral administration, Ceralasertib selectively inhibits ATR activity by blocking the downstream phosphorylation of the serine/threonine protein kinase CHK1. This prevents ATR-mediated signaling, and results in the inhibition of DNA damage checkpoint activation, disruption of DNA damage repair, and the induction of tumor cell apoptosis. In addition, AZD6738 sensitizes tumor cells to chemo- and radiotherapy. ATR, a serine/threonine protein kinase upregulated in a variety of cancer cell types, plays a key role in DNA repair, cell cycle progression and survival; it is activated by DNA damage caused during DNA replication-associated stress. |
Molecular Formula |
C20H24N6O2S
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Molecular Weight |
412.51
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Exact Mass |
412.17
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Elemental Analysis |
C, 58.23; H, 5.86; N, 20.37; O, 7.76; S, 7.77
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CAS # |
1352226-88-0
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Related CAS # |
1352226-88-0; 1352280-98-8 (formate); 1352226-87-9 (S-isomer); 1352226-97-1 (racemic)
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PubChem CID |
54761306
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Appearance |
White solid powder
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Density |
1.5±0.1 g/cm3
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Index of Refraction |
1.75
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LogP |
2.6
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tPSA |
116Ų
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SMILES |
C[C@@H]1COCCN1C2=NC(=NC(=C2)C3(CC3)[S@](=N)(=O)C)C4=C5C=CNC5=NC=C4
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InChi Key |
OHUHVTCQTUDPIJ-JYCIKRDWSA-N
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InChi Code |
InChI=1S/C20H24N6O2S/c1-13-12-28-10-9-26(13)17-11-16(20(5-6-20)29(2,21)27)24-19(25-17)15-4-8-23-18-14(15)3-7-22-18/h3-4,7-8,11,13,21H,5-6,9-10,12H2,1-2H3,(H,22,23)/t13-,29-/m1/s1
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Chemical Name |
imino-methyl-[1-[6-[(3R)-3-methylmorpholin-4-yl]-2-(1H-pyrrolo[2,3-b]pyridin-4-yl)pyrimidin-4-yl]cyclopropyl]-oxo-lambda6-sulfane
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Synonyms |
AZD6738; AZD-6738; AZD 6738; AZD6738; Ceralasertib; 1352226-88-0; CHEMBL4285417; AZD 6738; BDBM50468001; imino-methyl-[1-[6-[(3R)-3-methylmorpholin-4-yl]-2-(1H-pyrrolo[2,3-b]pyridin-4-yl)pyrimidin-4-yl]cyclopropyl]-oxo-lambda6-sulfane; BDBM60432;
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HS Tariff Code |
2934.99.9001
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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)
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Solubility (In Vitro) |
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Solubility (In Vivo) |
Solubility in Formulation 1: 6.67 mg/mL (16.17 mM) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution; with sonication.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 66.7 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 to the above solution and mix evenly; then add 450 μL normal saline to adjust the volume to 1 mL. Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution. Solubility in Formulation 2: ≥ 2.08 mg/mL (5.04 mM) (saturation unknown) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 20.8 mg/mL clear DMSO stock solution to 900 μL of 20% SBE-β-CD physiological saline solution and mix evenly. 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. View More
Solubility in Formulation 3: ≥ 2.08 mg/mL (5.04 mM) (saturation unknown) in 10% DMSO + 90% Corn Oil (add these co-solvents sequentially from left to right, and one by one), clear solution. Solubility in Formulation 4: 10% DMSO+40% propylene glycol+ddH2O: 10mg/mL Solubility in Formulation 5: 10 mg/mL (24.24 mM) in 50% PEG300 50% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution; with ultrasonication. Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution. |
Preparing Stock Solutions | 1 mg | 5 mg | 10 mg | |
1 mM | 2.4242 mL | 12.1209 mL | 24.2418 mL | |
5 mM | 0.4848 mL | 2.4242 mL | 4.8484 mL | |
10 mM | 0.2424 mL | 1.2121 mL | 2.4242 mL |
*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.
Calculation results
Working concentration: mg/mL;
Method for preparing DMSO stock solution: mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.
Method for preparing in vivo formulation::Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O,mix and clarify.
(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
(2) Be sure to add the solvent(s) in order.
NCT Number | Recruitment | interventions | Conditions | Sponsor/Collaborators | Start Date | Phases |
NCT04564027 | Active Recruiting |
Drug: Ceralasertib | Advanced Solid Tumours | AstraZeneca | December 1, 2020 | Phase 2 |
NCT03328273 | Active Recruiting |
Drug: Ceralasertib Drug: Acalabrutinib |
Chronic Lymphocytic Leukemia | Acerta Pharma BV | January 31, 2018 | Phase 1 |
NCT05061134 | Active Recruiting |
Drug: Ceralasertib Biological: Durvalumab |
Melanoma | AstraZeneca | August 11, 2022 | Phase 2 |
NCT05469919 | Active Recruiting |
Drug: Ceralasertib | Advanced Solid Malignancies | AstraZeneca | June 9, 2022 | Phase 1 |
NCT05514132 | Active Recruiting |
Drug: Ceralasertib Drug: Durvalumab |
Advanced Solid Tumours | AstraZeneca | September 23, 2022 | Phase 1 |
Inhibition of ATR by AZD6738 inhibits growth of NSCLC cells and induces a DNA damage response.Oncotarget.2015 Dec 29;6(42):44289-305. th> |
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AZD6738 sensitizes NSCLC cell lines to cisplatin and synergizes strongly with cisplatin in ATM-deficient H23 cells.Oncotarget.2015 Dec 29;6(42):44289-305. td> |
The combination of AZD6738 and cisplatin causes accumulation of cells in early S-phase and at the G1/S border.Oncotarget.2015 Dec 29;6(42):44289-305. td> |
The combination of AZD6738 and cisplatin causes dramatic cell death of ATM-deficient cells independent of the ATM-p53 signaling pathway.Oncotarget.2015 Dec 29;6(42):44289-305. th> |
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AZD6738 sensitizes ATM knockdown cells to cisplatin.Oncotarget.2015 Dec 29;6(42):44289-305. td> |
AZD6738 potentiates cisplatin efficacy in NSCLC xenografts, and the combination causes rapid regression of ATM-deficient H23 tumors.Oncotarget.2015 Dec 29;6(42):44289-305. td> |