Name: CBL0137 Hydrochloride
Brand: Selleck Chemicals
SKU: S8483
Availability: InStock
Rating: 5 (11 reviews)

Jump to

Quality Control

Batch: Purity: 99.95%

99.95

Related Targets	Bcl-2 Caspase PD-1/PD-L1 Ferroptosis Apoptosis related Synthetic Lethality STAT TNF-alpha Ras KRas
Other p53 Inhibitors	Eprenetapopt (APR-246) Pifithrin-α (PFTα) Hhydrobromide Pifithrin-μ RITA Serdemetan (JNJ-26854165) PRIMA-1 NSC 319726 (ZMC1) NSC59984 NSC348884 Tenovin-1

Solubility

In vitro
Batch:

DMSO : 20 mg/mL (53.63 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Water : 20 mg/mL

Ethanol : Insoluble

Molarity Calculator

Mass	Concentration	Volume	Molecular Weight
Mass value Mass unit	Concentration value Concentration unit	Volume value Volume unit	Molecular weight (g/mol)

Dilution Calculator Molecular Weight Calculator

In vivo batch selection 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.
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.	0.750mg/ml (2.01mM)	Taking the 1 mL working solution as an example, add 50 μL of 15 mg/ml clarified DMSO stock solution to 400 μL of PEG300, mix evenly to clarify it; add 50 μL of Tween80 to the above system, mix evenly to clarify; 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.
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.

Chemical Information, Storage & Stability

Molecular Weight	372.89	Formula	C₂₁H₂₄N₂O₂.HCl	Storage (From the date of receipt)	3 years-20°Cpowder
CAS No.	1197397-89-9	Download SDF		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	CBLC137 HCl, Curaxin 137 HCl			SMILES	CC(C)NCCN1C2=C(C=C(C=C2)C(=O)C)C3=C1C=CC(=C3)C(=O)C.Cl

Read more about storage stability stock solution CAS number SMILES

Mechanism of Action

Targets/IC₅₀/Ki	FACT p53 (Cell-free assay) 0.37 μM(EC50) NF-κB (Cell-free assay) 0.47 μM(EC50)
In vitro	CBL0137 is a potent inducer of apoptosis in pancreatic cancer cell lines and is toxic not only for proliferating bulk tumor cells, but also for pancreatic cancer stem cells. CBL0137 and related molecules can simultaneously activate p53 and inhibit cellular stress pathways mediated by NF-κB and HSF-1. CBL0137 binds DNA but does not cause any sort of chemical modifications in DNA and therefore lacks genotoxicity. However, CBL0137 binding to DNA leads to functional inactivation of the Facilitates Chromatin Transcription (FACT) complex, a chromatin remodeling complex involved in transcription, replication, and DNA repair. In CBL0137-treated cells, FACT is lost from the nucleoplasm and trapped in chromatin, resulting in the inhibition of FACT-dependent transcription, including NF-kB-mediated transcription. Additionally, chromatin trapping of FACT leads to casein kinase 2 (CK2)-dependent phosphorylation and activation of p53.
In vivo	In mice, CBL0137 is effective against several Pancreatic ductal adenocarcinoma (PDA) models, including patient derived xenografts, in which CBL0137 anti-tumor effect correlated with overexpression of FACT. CBL0137 targets glioblastoma (GBM) according to its proposed mechanism of action, crosses the blood-brain barrier, and is efficacious in both TMZ-responsive and -resistant orthotopic models. The property of crossing the blood-brain barrier, especially when administered i.v, bodes well for the potential of this drug to treat CNS tumors. In orthotopic models, i.v. administration leads to greater tumor tissue accumulation than oral dosing, leading to greater bioavailability. Normal brain tissue accumulation of CBL0137 does not cause observable neurotoxicity.
References	[1] https://pubmed.ncbi.nlm.nih.gov/21832239/ [2] https://pubmed.ncbi.nlm.nih.gov/25402820/ [3] https://pubmed.ncbi.nlm.nih.gov/27370399/

Applications

Methods	Biomarkers	Images	PMID
Western blot	p53 / Hdm2 caspase-3 / caspase-7 / caspase-8 / caspase-9 / PARP		27370399

Clinical Trial Information

(data from https://clinicaltrials.gov, updated on 2026-05-22)

NCT Number	Recruitment	Conditions	Sponsor/Collaborators	Start Date	Phases
NCT05498792	RECRUITING	Locally Advanced or Metastatic Melanoma	Fox Chase Cancer Center	2022-11-30	EARLY_PHASE1
NCT04870944	SUSPENDED	Diffuse Midline Glioma, H3 K27-Altered; Metastatic Malignant Neoplasm in the Central Nervous System; Recurrent Diffuse Intrinsic Pontine Glioma; Recurrent Diffuse Midline Glioma, H3 K27-Altered; Recurrent Lymphoma; Recurrent Malignant Solid Neoplasm; Recurrent Primary Malignant Central Nervous System Neoplasm; Refractory Lymphoma; Refractory Malignant Solid Neoplasm; Refractory Primary Malignant Central Nervous System Neoplasm	Children's Oncology Group	2022-01-28	PHASE1; PHASE2
NCT03727789	TERMINATED	Advanced Cutaneous Melanoma of the Extremity; Advanced Sarcoma of the Extremity; Clinical Stage III Cutaneous Melanoma AJCC v8; Clinical Stage IV Cutaneous Melanoma AJCC v8; Pathologic Stage IIIB Cutaneous Melanoma AJCC v8; Pathologic Stage IIIC Cutaneous Melanoma AJCC v8; Pathologic Stage IV Cutaneous Melanoma AJCC v8; Recurrent Cutaneous Melanoma of the Extremity; Recurrent Sarcoma of the Extremity; Stage III Soft Tissue Sarcoma of the Trunk and Extremities AJCC v8; Stage IIIA Soft Tissue Sarcoma of the Trunk and Extremities AJCC v8; Stage IIIB Soft Tissue Sarcoma of the Trunk and Extremities AJCC v8; Stage IV Soft Tissue Sarcoma of the Trunk and Extremities AJCC v8	Roswell Park Cancer Institute	2019-07-01	PHASE1
NCT02931110	TERMINATED	Hematological Malignancies	Incuron	2017-01	PHASE1
NCT01905228	COMPLETED	Solid Tumors; Glioblastoma	Incuron	2013-07	PHASE1

Tech Support

Handling Instructions

Tel: +1-832-582-8158 Ext:3

If you have any other enquiries, please leave a message.

C1=C0/X	C1:	LOG(C1):
C2=C1/X	C2:	LOG(C2):
C3=C2/X	C3:	LOG(C3):
C4=C3/X	C4:	LOG(C4):
C5=C4/X	C5:	LOG(C5):
C6=C5/X	C6:	LOG(C6):
C7=C6/X	C7:	LOG(C7):
C8=C7/X	C8:	LOG(C8):

CBL0137 Hydrochloride p53 activator

Chemical Structure

Molecular Weight: 372.89