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CCT245737 (SRA737) Chk inhibitor

Name: CCT245737 (SRA737)
Brand: Selleck Chemicals
SKU: S8253
Availability: InStock
Rating: 5 (9 reviews)

Cat.No.S8253

CCT245737 (SRA737) is an orally active CHK1 inhibitor with an IC50 of 1.4 nM, and it exhibits >1,000-fold selectivity against CHK2 and CDK1.

Chemical Structure

Molecular Weight: 379.34

Jump to Mechanism of Action Cell Culture & Working Concentration Solubility Chemical Information, Storage & Stability Specificity

Quality Control

Batch: Purity: 99.68%

99.68

Related Targets	DNA/RNA Synthesis CDK Microtubule Associated Ras HSP PD-1/PD-L1 Aurora Kinase Casein Kinase Rho Serine/threonin kinase eIF ROCK Myc Kinesin PLK DHFR PAK PERK DYRK RUNX PP2A PFKFB AP-1 MPS1 Wee1 p21 BMI-1 LIM kinase Nur77 APC
Related Products	AZD7762 Rabusertib (LY2603618) MK-8776 (SCH 900776) CHIR-124 Prexasertib (LY2606368) Dihydrochloride PF-477736 BML-277 (Chk2 Inhibitor II) Prexasertib (LY2606368) GDC-0575 BBI-355 Mad1 Antibody [M18F4] Phospho-Chk1 (Ser345) Antibody [P19M4] CCT241533 hydrochloride SAR-020106 Chk2 Antibody [K6G1] Phospho-Chk1 (Ser317) Antibody [N9E3] Phospho-Chk2 (Thr68) Antibody [L12K12] Chk2 Antibody [C4M24] BBI-2779 14-3-3 γ Antibody [J16F21] LY2880070 CDK5RAP3 Antibody [K12N22]

Cell Culture, Treatment & Working Concentration

Cell Lines	Assay Type	Incubation Time	Activity Description	PMID
HEK293 cells	Antiproliferative assay	72 hrs	Antiproliferative activity against human HEK293 cells after 72 hrs by MTS assay, GI50=1.387μM.	29684894
HT-29 cells	Antiproliferative assay	72 hrs	Antiproliferative activity against human HT-29 cells after 72 hrs by MTS assay, GI50=9.223μM.	29684894
Click to View More Cell Line Experimental Data

Chemical Information, Storage & Stability

Molecular Weight	379.34	Formula	C₁₆H₁₆F₃N₇O	Storage (From the date of receipt)	3 years-20°Cpowder
CAS No.	1489389-18-5	--		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	PNT-737			Smiles	C1COC(CN1)CNC2=CC(=NC=C2C(F)(F)F)NC3=NC=C(N=C3)C#N

Solubility

In vitro
Batch:

DMSO : 76 mg/mL (200.34 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Water : Insoluble

Ethanol : Insoluble

Molarity Calculator

Mass	Concentration	Volume	Molecular Weight
=	×	×

Dilution Calculator Molecular Weight Calculator

In vivo Batch:
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Clear solution	5%DMSO 1 40%PEG300 2 5%Tween80 3 50%ddH2O Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	3.800mg/ml (10.02mM)	Taking the 1 mL working solution as an example, add 50 μL of clarified DMSO stock solution of 76 mg/ml to 400 μL of PEG300, mix evenly to clarify it; add 50 μL of Tween80 to the above system, mix evenly to clarify it; then continue to add 500 μL of ddH2O to adjust the volume to 1 mL. The mixed solution should be used immediately for optimal results.
Clear solution	5% DMSO 1 95% corn oil Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	1.250mg/ml (3.30mM)	Taking the 1 mL working solution as an example, add 50 μL of 25 mg/ml clear DMSO stock solution to 950 μL of corn oil and mix evenly. The mixed solution should be used immediately for optimal results.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.

In vivo Formulation Calculator (Clear solution)

Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)

Dosage: mg/kg Average weight of animals: g Dosing volume per animal:μL Number of animals:

Step 2: Enter the in vivo formulation (This is only the calculator, not formulation. Please contact us first if there is no in vivo formulation at the solubility Section.)

% DMSO + % + % Tween 80 + % ddH₂O

%DMSO+ %

Calculation results:

Working concentration: mg/ml;

Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid 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 master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH₂O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such
as vortex, ultrasound or hot water bath can be used to aid dissolving.

Mechanism of Action

Targets/IC₅₀/Ki	Chk1 ^[1] (Cell-free assay) 1.4 nM
In vitro	SRA737 (CCT245737) is a potent inhibitor of recombinant human CHK1 with IC50 of 1.4±0.3 nM (mean±SD, n = 3, EZ Reader II assay). There is > 1,000-fold selectivity for CHK1 versus the functionally important kinases CDK1 and CHK2 (IC50=1.26-2.44 and 9.03 μM, respectively), and at least a 90-fold selectivity against cross-reacting kinases such as ERK8, PKD1, RSK1 and 2. It potently inhibits cellular CHK1 activity (IC50 30-220nM) and enhances SN38 cytotoxicity in multiple human tumor cell lines and human tumor xenograft models. This compound can abrogate an induced G2/M arrest. It has high cell permeability, as measured by transport across a CaCo2 cell monolayer^[1].
In vivo	Mouse oral bioavailability of CCT245737 (SRA737) is complete (100%) with extensive tumor exposure. It shows significant single-agent activity against a MYC-driven mouse model of B-cell lymphoma. An i.v. dose of 10mg/kg into BALB/c mice gives a peak plasma concentration of 4μmol/L, with a half-life of 2.86h, an AUC0-∞ of 9.96μmol.h/L, a plasma clearance of 2.1L/h/kg and a large volume of distribution (0.19L). The equivalent oral dose gave an almost identical profile with an AUC0-∞ of 10.4μmol.h/L showing complete oral bioavailability (F = 105%). In a word, this compound shows complete oral bioavailability with linear pharmacokinetics and high tumor/plasma ratios consistent with extensive tumor exposure. Adequate tumor drug exposure takes a significant antitumor activity^[1].
References	[1] https://pubmed.ncbi.nlm.nih.gov/26295308/

Clinical Trial Information

(data from https://clinicaltrials.gov, updated on 2024-05-22)

NCT Number	Recruitment	Conditions	Sponsor/Collaborators	Start Date	Phases
NCT02797964	Completed	Advanced Solid Tumors or Non-Hodgkin''s Lymphoma (NHL)	Sierra Oncology LLC - a GSK company	July 2016	Phase 1\|Phase 2
NCT02797977	Completed	Advanced Solid Tumors	Sierra Oncology LLC - a GSK company	July 2016	Phase 1\|Phase 2

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