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Elimusertib (BAY 1895344) ATR Inhibitor

Cat.No.S9864

Elimusertib (BAY-1895344) is a very potent and highly selective ATR (ataxia telangiectasia and Rad3-related) inhibitor with IC50 of 7 nM. Elimusertib potently inhibits proliferation of a broad spectrum of human tumor cell lines with median IC50 of 78 nM.
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Quality Control

Batch: Purity: 99.99%
99.99

Solubility

In vitro
Batch:

DMSO : 17 mg/mL (45.28 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Ethanol : 3 mg/mL

Water : Insoluble

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In vivo
Batch:

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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
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Chemical Information, Storage & Stability

Molecular Weight 375.43 Formula

C20H21N7O

Storage (From the date of receipt) 3 years -20°C powder
CAS No. 1876467-74-1 -- Storage of Stock Solutions

Synonyms N/A SMILES CC1COCCN1C2=CC(=C3C=CN=C(C4=CC=N[NH]4)C3=N2)C5=CC=N[N]5C

Read more about storage stability stock solution CAS number SMILES

Mechanism of Action

Targets/IC50/Ki
ATR
(Cell-free assay)
7 nM
In vitro

Elimusertib (BAY-1895344) inhibits tumor cell growth and viability and exhibits potent antiproliferative activity in a broad spectrum of human tumor cell lines.

In vivo

In cancer xenograft models with DNA damage repair deficiencies, Elimusertib (BAY-1895344) exhibits strong monotherapy efficacy.

References

Clinical Trial Information

(data from https://clinicaltrials.gov, updated on 2026-07-31)

NCT Number Recruitment Conditions Sponsor/Collaborators Start Date Phases
NCT04491942 ACTIVE_NOT_RECRUITING
Advanced Bile Duct Carcinoma; Advanced Breast Carcinoma; Advanced Cervical Carcinoma; Advanced Endometrial Carcinoma; Advanced Esophageal Carcinoma; Advanced Gastric Carcinoma; Advanced Head and Neck Carcinoma; Advanced Lung Non-Small Cell Carcinoma; Advanced Lung Small Cell Carcinoma; Advanced Malignant Solid Neoplasm; Advanced Ovarian Carcinoma; Advanced Penile Carcinoma; Advanced Pleural Malignant Mesothelioma; Advanced Urothelial Carcinoma; Anatomic Stage III Breast Cancer AJCC v8; Anatomic Stage IV Breast Cancer AJCC v8; Clinical Stage III Gastric Cancer AJCC v8; Clinical Stage IV Gastric Cancer AJCC v8; Stage III Cervical Cancer AJCC v8; Stage III Distal Bile Duct Cancer AJCC v8; Stage III Intrahepatic Bile Duct Cancer AJCC v8; Stage III Lung Cancer AJCC v8; Stage III Ovarian Cancer AJCC v8; Stage III Penile Cancer AJCC v8; Stage III Pleural Diffuse Malignant Mesothelioma AJCC v8; Stage IV Cervical Cancer AJCC v8; Stage IV Distal Bile Duct Cancer AJCC v8; Stage IV Intrahepatic Bile Duct Cancer AJCC v8; Stage IV Lung Cancer AJCC v8; Stage IV Ovarian Cancer AJCC v8; Stage IV Penile Cancer AJCC v8; Stage IV Pleural Diffuse Malignant Mesothelioma AJCC v8; Triple-Negative Breast Carcinoma; Unresectable Urothelial Carcinoma
National Cancer Institute (NCI)
2021-08-25 PHASE1
NCT04576091 ACTIVE_NOT_RECRUITING
Clinical Stage III HPV-Mediated (p16-Positive) Oropharyngeal Carcinoma AJCC v8; Clinical Stage IV HPV-Mediated (p16-Positive) Oropharyngeal Carcinoma AJCC v8; Recurrent Head and Neck Cutaneous Squamous Cell Carcinoma; Recurrent Head and Neck Squamous Cell Carcinoma; Recurrent Hypopharyngeal Squamous Cell Carcinoma; Recurrent Laryngeal Squamous Cell Carcinoma; Recurrent Oral Cavity Squamous Cell Carcinoma; Recurrent Oropharyngeal Squamous Cell Carcinoma; Recurrent Paranasal Sinus Squamous Cell Carcinoma; Recurrent Salivary Gland Carcinoma; Stage III Head and Neck Cutaneous Squamous Cell Carcinoma AJCC v8; Stage III Hypopharyngeal Carcinoma AJCC v8; Stage III Laryngeal Cancer AJCC v8; Stage III Lip and Oral Cavity Cancer AJCC v8; Stage III Major Salivary Gland Cancer AJCC v8; Stage III Oropharyngeal (p16-Negative) Carcinoma AJCC v8; Stage III Sinonasal Cancer AJCC v8; Stage IV Head and Neck Cutaneous Squamous Cell Carcinoma AJCC v8; Stage IV Hypopharyngeal Carcinoma AJCC v8; Stage IV Laryngeal Cancer AJCC v8; Stage IV Lip and Oral Cavity Cancer AJCC v8; Stage IV Major Salivary Gland Cancer AJCC v8; Stage IV Oropharyngeal (p16-Negative) Carcinoma AJCC v8; Stage IV Sinonasal Cancer AJCC v8; Unresectable Head and Neck Cutaneous Squamous Cell Carcinoma; Unresectable Head and Neck Squamous Cell Carcinoma; Unresectable Hypopharyngeal Squamous Cell Carcinoma; Unresectable Laryngeal Squamous Cell Carcinoma; Unresectable Oral Cavity Squamous Cell Carcinoma; Unresectable Oropharyngeal Squamous Cell Carcinoma; Unresectable Paranasal Sinus Squamous Cell Carcinoma; Unresectable Salivary Gland Squamous Cell Carcinoma
National Cancer Institute (NCI)
2022-07-06 PHASE1
NCT04616534 ACTIVE_NOT_RECRUITING
Advanced Fallopian Tube Carcinoma; Advanced Malignant Solid Neoplasm; Advanced Ovarian Carcinoma; Advanced Pancreatic Adenocarcinoma; Advanced Primary Peritoneal Carcinoma; Fallopian Tube High Grade Serous Adenocarcinoma; Metastatic Pancreatic Adenocarcinoma; Ovarian High Grade Serous Adenocarcinoma; Platinum-Resistant Fallopian Tube Carcinoma; Platinum-Resistant Ovarian Carcinoma; Platinum-Resistant Primary Peritoneal Carcinoma; Primary Peritoneal High Grade Serous Adenocarcinoma; Stage II Pancreatic Cancer AJCC v8; Stage III Fallopian Tube Cancer AJCC v8; Stage III Ovarian Cancer AJCC v8; Stage III Pancreatic Cancer AJCC v8; Stage III Primary Peritoneal Cancer AJCC v8; Stage IV Fallopian Tube Cancer AJCC v8; Stage IV Ovarian Cancer AJCC v8; Stage IV Pancreatic Cancer AJCC v8; Stage IV Primary Peritoneal Cancer AJCC v8; Unresectable Pancreatic Adenocarcinoma
National Cancer Institute (NCI)
2021-06-01 PHASE1
NCT04535401 ACTIVE_NOT_RECRUITING
Advanced Colorectal Carcinoma; Advanced Digestive System Carcinoma; Advanced Gastric Carcinoma; Advanced Gastroesophageal Junction Adenocarcinoma; Clinical Stage III Gastric Cancer AJCC v8; Clinical Stage III Gastroesophageal Junction Adenocarcinoma AJCC v8; Clinical Stage IV Gastric Cancer AJCC v8; Clinical Stage IV Gastroesophageal Junction Adenocarcinoma AJCC v8; Metastatic Colorectal Carcinoma; Metastatic Digestive System Carcinoma; Metastatic Gastric Carcinoma; Metastatic Gastroesophageal Junction Adenocarcinoma; Stage III Colorectal Cancer AJCC v8; Stage IV Colorectal Cancer AJCC v8
National Cancer Institute (NCI)
2021-08-13 PHASE1
NCT04514497 ACTIVE_NOT_RECRUITING
Metastatic Lung Small Cell Carcinoma; Metastatic Malignant Solid Neoplasm; Metastatic Neuroendocrine Carcinoma; Metastatic Pancreatic Adenocarcinoma; Stage III Lung Cancer AJCC v8; Stage III Pancreatic Cancer AJCC v8; Stage IV Lung Cancer AJCC v8; Stage IV Pancreatic Cancer AJCC v8; Unresectable Lung Small Cell Carcinoma; Unresectable Malignant Solid Neoplasm; Unresectable Neuroendocrine Carcinoma; Unresectable Pancreatic Adenocarcinoma
National Cancer Institute (NCI)
2021-10-20 PHASE1
NCT05071209 ACTIVE_NOT_RECRUITING
Recurrent Alveolar Rhabdomyosarcoma; Recurrent Ewing Sarcoma; Recurrent Lymphoma; Recurrent Malignant Solid Neoplasm; Refractory Alveolar Rhabdomyosarcoma; Refractory Ewing Sarcoma; Refractory Lymphoma; Refractory Malignant Solid Neoplasm
National Cancer Institute (NCI)
2021-12-22 PHASE1; PHASE2

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