Os30
Based on 1 Customer Validation
Os30, a potent fourth-generation EGFR inhibitor, is a potent EGFRC797S-TK inhibitor with IC50 values of 18 nM and 113 nM for EGFRDel19/T790M/C797S TK and EGFRL858R/T790M/C797S TK, respectively. Os30 can suppress EGFR phosphorylation, arrest at G1 phase and induce the apoptosis of KC-0116 (BaF3-EGFRDel19/T790M/C797S) cells. Os30 shows potent antitumor efficacy on non-small cell lung cancer (NSCLC) with EGFmRC797S mutation.
For research use only. We do not sell to patients.
- Purity : 98.34%
- CAS No.: 2998928-68-8
- Formula: C27H33N7O2S
- Molecular Weight:519.66
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Storage:Powder -20°C, 3 years , 4°C, 2 years ; In solvent -80°C, 6 months , -20°C, 1 month
To place orders, for customer services and technical support, please contact: MedChemExpress USA
Tel: 609-228-6898 E-mail: [email protected] [email protected]
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Biological Activity
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Chemical Information
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Solvent & Solubility
- Protocols
- Purity & Documentation
- References
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Help & FAQs
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Biological Activity
Description
Cellular Effect
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Cell Line
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Type | Value | Description | References |
|---|---|---|---|---|
| A-431 | IC50 |
1.99 μM
Compound: Os30
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Antiproliferative activity against human A-431 cells harboring wild type EGFR assessed as inhibition of cell growth incubated for 72 hrs by MTT assay
Antiproliferative activity against human A-431 cells harboring wild type EGFR assessed as inhibition of cell growth incubated for 72 hrs by MTT assay
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[PMID: 37839342] |
| HCC827 | IC50 |
0.16 μM
Compound: Os30
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Antiproliferative activity against human HCC827 cells harboring EGFR Del19 mutant assessed as inhibition of cell growth incubated for 72 hrs by MTT assay
Antiproliferative activity against human HCC827 cells harboring EGFR Del19 mutant assessed as inhibition of cell growth incubated for 72 hrs by MTT assay
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[PMID: 37839342] |
| HepG2 | IC50 |
1.78 μM
Compound: Os30
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Antiproliferative activity against human HepG2 cells harboring VEGFR assessed as inhibition of cell growth incubated for 72 hrs by MTT assay
Antiproliferative activity against human HepG2 cells harboring VEGFR assessed as inhibition of cell growth incubated for 72 hrs by MTT assay
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[PMID: 37839342] |
| NCI-H1975 | IC50 |
1 μM
Compound: Os30
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Antiproliferative activity against human NCI-H1975 cells harboring EGFR L858R/T790M mutant assessed as inhibition of cell growth incubated for 72 hrs by MTT assay
Antiproliferative activity against human NCI-H1975 cells harboring EGFR L858R/T790M mutant assessed as inhibition of cell growth incubated for 72 hrs by MTT assay
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[PMID: 37839342] |
Chemical Information
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CAS No. 2998928-68-8
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Appearance Solid
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Molecular Weight 519.66
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Formula C27H33N7O2S
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Color White to off-white
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SMILES
CN(C1=C2C=CC=C1)C=C2C3=CC=NC(NC4=CC(NS(C)(=O)=O)=C(N5CCC(N(C)C)CC5)C=C4)=N3
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Powder -20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month
Solvent & Solubility
In Vitro:
DMSO : 50 mg/mL (96.22 mM; ultrasonic and warming and heat to 80°C; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)
Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
In Vivo:
Select the appropriate dissolution method based on your experimental animal and administration route.
- For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
- To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for In Vivo experiments, it is recommended to prepare freshly and use it on the same day.
- The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.
Add each solvent one by one: 10% DMSO 40% PEG300 5% Tween-80 45% Saline
Solubility: 2.5 mg/mL (4.81 mM); Clear solution; Need ultrasonic
This protocol yields a clear solution of 2.5 mg/mL.
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 400 μL PEG300, and mix evenly; then add 50 μL Tween-80 and mix evenly; then add 450 μL Saline to adjust the volume to 1 mL.
Preparation of Saline: Dissolve 0.9 g sodium chloride in ddH₂O and dilute to 100 mL to obtain a clear Saline solution.
In Vivo Dissolution Calculator
Please enter the basic information of animal experiments:
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Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
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%DMSO +
Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
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%+
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+%Tween-80 + +
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%Saline +
The co-solvents required include: DMSO, . All of co-solvents are available by MedChemExpress (MCE). , Tween 80. All of co-solvents are available by MedChemExpress (MCE).
Working solution concentration: 0.22 mg/mL
Method for preparing stock solution: mg drug dissolved in μL DMSO. Stock solution concentration: mg/mL.
1. Take μL DMSO stock solution;
2. Add μL .
μL , mix evenly;
3. Then add μL Tween 80, mix evenly;
4. Then add μL
Please ensure that the stock solution in the first step is dissolved to a clear state, and add co-solvents in sequence. You can use ultrasonic heating (ultrasonic cleaner, recommended frequency 20-40 kHz), vortexing, etc. to assist dissolution.
Protocols
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Kinase activity and phosphorylation assays
Kinase activity assays measure the ability of kinases to transfer phosphate groups from ATP to specific substrates, while phosphorylation assays detect the presence and levels of phosphorylated proteins. Common methods include radiolabeled ATP incorporation (e. g. ,), ADP release detection via bioluminescence (e. g. ,[3]), enzyme-linked immunosorbent assays (ELISA) for phospho-specific epitopes (e. g. ,[6]), and microtiter-based formats for high-throughput screening (e. g. ,[8]). The ADP-Glo assay quantifies kinase activity by measuring ADP produced during phosphorylation using a luciferase-based system. Radiometric assays involve autoradiography or scintillation counting after incorporation of 32P-labeled ATP into substrate proteins. ELISA-based approaches rely on phospho-specific antibodies to detect activated kinases in cell lysates or purified samples.
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Western Blot
Western blotting (WB) is a commonly used experimental method in molecular biology, biochemistry, and immunogenetics for identifying and quantifying target proteins. It combines gel electrophoresis with immunoassay, enabling researchers to analyze protein expression, post-translational modifications, and molecular weight.
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Apoptosis
Apoptosis, also called programmed cell death, is generally characterized by distinct morphological characteristics.
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TUNEL staining for apoptotic DNA fragmentation
TUNEL staining detects DNA strand breaks by using terminal deoxynucleotidyl transferase to add labeled nucleotides to exposed 3′-OH DNA termini, generating either microscopic staining in fixed cells or tissue sections, or fluorescence/cytometric signal in cell suspensions. TUNEL positivity reflects DNA fragmentation but should not be interpreted alone as definitive apoptosis, because TUNEL can also label necrotic, autolytic, mechanically damaged, or DNA-repair-associated DNA breaks.
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Cell Cytotoxicity Assay
Cytotoxicity assays are usually based on the assessment of cell membrane damage, which can also be indirectly detected by measuring cell viability. Detection methods include MTT assay, CKK-8 assay, LDH assay and ATP assay, etc.
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Annexin V plus membrane-impermeant dye apoptosis staining
Annexin V-based apoptosis assays rely on the detection of phosphatidylserine (PS) externalization from the inner leaflet of the plasma membrane to the outer leaflet, an early biochemical hallmark of apoptosis. Fluorescently labeled Annexin V binds PS in a calcium-dependent manner, enabling identification of early apoptotic cells by flow cytometry or fluorescence microscopy. When combined with a membrane-impermeant DNA-binding dye (e. g. , propidium iodide), this approach allows discrimination between viable (Annexin V−/dye−), early apoptotic (Annexin V+/dye−), and late apoptotic or necrotic (Annexin V+/dye+) cell populations by assessing membrane integrity and PS exposure.
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Patient-Derived Xenograft (PDX)
Patient-derived xenograft (PDX) models are generated by engrafting primary human tumor tissue directly into immunodeficient mice, allowing in vivo propagation of patient tumor biology without initial in vitro adaptation. These models are used to preserve key histopathological and molecular characteristics of the original tumor and enable assessment of tumor growth dynamics and therapeutic response in a living organism. The biological readout is tumor engraftment and subsequent growth in the murine host, which reflects the ability of human tumor cells to survive, vascularize, and expand in an immunocompromised microenvironment.
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Apoptosis Solutions
Apoptosis is a regulated, generally non-lytic cell-death pathway that removes unwanted, damaged, infected, or abnormal cells through coordinated morphological changes, caspase activation, DNA fragmentation, and membrane remodeling. The intrinsic apoptosis pathway is controlled mainly by mitochondrial outer membrane permeabilization, BCL-2 family proteins, cytochrome c release, apoptosome formation, caspase-9 activation, and downstream executioner caspase-3/7 activation. The extrinsic apoptosis pathway is initiated by death receptors such as Fas, TNFR, and TRAIL receptors, which recruit adaptor proteins and activate caspase-8 before engaging executioner caspases or mitochondrial amplification through BID cleavage. Apoptosis is linked to many phenotypes, including cancer cell killing, tissue homeostasis, immune regulation, neurodegeneration, infection response, and treatment-induced cytotoxicity; unresolved questions include how apoptosis interacts with necroptosis, pyroptosis, ferroptos
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Protocol for Kinase activity and phosphorylation assays
Kinase activity assays measure transfer of phosphate from ATP to a protein or peptide substrate, generating phosphorylated substrate, ADP, or incorporated radiolabeled phosphate as the readout; phosphorylation assays measure site-specific phosphorylation in cells or tissues as a proxy for kinase-pathway activation, inhibition, or substrate regulation. Phosphorylation can be detected by phospho-specific Western blot, immunoprecipitation kinase assay, phospho-immunofluorescence, phospho-flow cytometry, luminescent ADP detection, radiolabeled ATP incorporation, or reporter-based pathway assays, and these readouts can be applied to cancer cells, primary neurons, mouse tumors, organoids, inflammatory macrophages, ferroptosis studies, and mitophagy studies when the kinase target is biologically relevant.
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Genotoxicity/Mutagenicity Study
The bacterial reverse mutation assay detects point mutations that restore amino-acid prototrophy in auxotrophic Salmonella typhimurium or Escherichia coli tester strains; after exposure to a test article, mutagenic activity is read out as an increased number of revertant colonies on minimal agar compared with the vehicle control. The assay uses tester strains with different mutation targets so that base-substitution and frameshift mutagens can be detected, and testing is performed with and without exogenous mammalian metabolic activation because some chemicals require biotransformation to become mutagenic.
Purity & Documentation
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Data Sheet (276 KB)
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SDS (251 KB)
- English - EN (251 KB)
- Français - FR (251 KB)
- Deutsch - DE (251 KB)
- Norwegian - NO (251 KB)
- Español - ES (251 KB)
- Swedish - SV (251 KB)
- Italian - IT (251 KB)
- Korean - KR (251 KB)
- Portuguese - PT (251 KB)
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Handling Instructions (2659 KB)
References
Complete Stock Solution Preparation Table
Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
| Optional Solvent | Concentration Solvent Mass | 1 mg | 5 mg | 10 mg | 25 mg |
|---|---|---|---|---|---|
| DMSO | 1 mM | 1.9243 mL | 9.6217 mL | 19.2434 mL | 48.1084 mL |
| 5 mM | 0.3849 mL | 1.9243 mL | 3.8487 mL | 9.6217 mL | |
| 10 mM | 0.1924 mL | 0.9622 mL | 1.9243 mL | 4.8108 mL | |
| 15 mM | 0.1283 mL | 0.6414 mL | 1.2829 mL | 3.2072 mL | |
| 20 mM | 0.0962 mL | 0.4811 mL | 0.9622 mL | 2.4054 mL | |
| 25 mM | 0.0770 mL | 0.3849 mL | 0.7697 mL | 1.9243 mL | |
| 30 mM | 0.0641 mL | 0.3207 mL | 0.6414 mL | 1.6036 mL | |
| 40 mM | 0.0481 mL | 0.2405 mL | 0.4811 mL | 1.2027 mL | |
| 50 mM | 0.0385 mL | 0.1924 mL | 0.3849 mL | 0.9622 mL | |
| 60 mM | 0.0321 mL | 0.1604 mL | 0.3207 mL | 0.8018 mL | |
| 80 mM | 0.0241 mL | 0.1203 mL | 0.2405 mL | 0.6014 mL |
Os30 Related Classifications
HY-155358 Related Classifications
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