Physicochemical Properties
| Molecular Formula | C26H34N6O2 |
| Molecular Weight | 462.59 |
| CAS # | 2956666-60-5 |
| Appearance | Typically exists as solid at room temperature |
| HS Tariff Code | 2934.99.9001 |
| 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) |
Biological Activity
| Targets | IC50:1.15 nM (ATM)[1] |
| ln Vitro | ATM Inhibitor-8 exerts inhibitory effects on breast cancer cells (MCF-7) and colorectal cancer cells (HCT116, SW620) [1]. MCF-7 cell viability can be inhibited by combining ATM Inhibitor-8 (200 nM) with 4.22 μM Etposide and 0.036 μM Irinotecan [1]. ATM Inhibitor-8 (200 nM) in conjunction with 0.22 μM Irinotecan can lower SW620 cell viability and prevent SW620 cell colony formation (0.02 μM) [1]. |
| ln Vivo | The combination of ATM Inhibitor-8 with Irinotecan (40 mg/kg) (HY-16562) inhibits the growth of tumors in the SW620 mouse model [1]. Balb/c mice exhibit favorable PK values for ATM Inhibitor-8 (10 mg/kg, iv), indicating reduced plasma clearance, increased plasma exposure, and superior oral bioavailability. [1]. |
| Cell Assay |
Western Blot Analysis Cell Types: HCT116 cell[1] Tested Concentrations: 200 nM Incubation Duration: 4 h Experimental Results: :Inhibted ATM pathway obviously combined with 25 μM Irinotecan. Cell Cycle Analysis Cell Types: HCT116 cell[1] Tested Concentrations: 200 nM Incubation Duration: 48 h Experimental Results: diminished G0/G1 phase cells and increased G0/G1 phase cells with the concentration increase. |
| Animal Protocol |
Animal/Disease Models: Mouse xenograft model of human colon cancer[1]. Doses: 40 mg/kg combined with Irinotecan(40 mg/kg) Route of Administration: ATM Inhibitor-8, 20 or 40 mg/kg, po one time/day for 3 days every week starting 24 h post-irinotecan dosing (40 mg/kg, ip once weekly). Experimental Results: Inhibited tumor growth Dramatically. |
| References |
[1]. Discovery and Evaluation of 3-Quinoxalin Urea Derivatives as Potent, Selective, and Orally Available ATM Inhibitors Combined with Chemotherapy for the Treatment of Cancer via Goal-Oriented Molecule Generation and Virtual Screening. J Med Chem. 2023 Jul 27，. |
Solubility Data
| Solubility (In Vitro) | May dissolve in DMSO (in most cases), if not, try other solvents such as H2O, Ethanol, or DMF with a minute amount of products to avoid loss of samples |
| Solubility (In Vivo) |
Note: Listed below are some common formulations that may be used to formulate products with low water solubility (e.g. < 1 mg/mL), you may test these formulations using a minute amount of products to avoid loss of samples. Injection Formulations (e.g. IP/IV/IM/SC) Injection Formulation 1: DMSO : Tween 80： Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution → 50 μL Tween 80 → 850 μL Saline) *Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH ₂ O to obtain a clear solution. Injection Formulation 2: DMSO : PEG300 ：Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL DMSO → 400 μLPEG300 → 50 μL Tween 80 → 450 μL Saline) Injection Formulation 3: DMSO : Corn oil = 10 : 90 (i.e. 100 μL DMSO → 900 μL Corn oil) Example: Take the Injection Formulation 3 (DMSO : Corn oil = 10 : 90) as an example, if 1 mL of 2.5 mg/mL working solution is to be prepared, you can take 100 μL 25 mg/mL DMSO stock solution and add to 900 μL corn oil, mix well to obtain a clear or suspension solution (2.5 mg/mL, ready for use in animals). Injection Formulation 4: DMSO : 20% SBE-β-CD in saline = 10 : 90 [i.e. 100 μL DMSO → 900 μL (20% SBE-β-CD in saline)] *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. Injection Formulation 5: 2-Hydroxypropyl-β-cyclodextrin : Saline = 50 : 50 (i.e. 500 μL 2-Hydroxypropyl-β-cyclodextrin → 500 μL Saline) Injection Formulation 6: DMSO : PEG300 : castor oil : Saline = 5 : 10 : 20 : 65 (i.e. 50 μL DMSO → 100 μLPEG300 → 200 μL castor oil → 650 μL Saline) Injection Formulation 7: Ethanol : Cremophor : Saline = 10： 10 : 80 (i.e. 100 μL Ethanol → 100 μL Cremophor → 800 μL Saline) Injection Formulation 8: Dissolve in Cremophor/Ethanol (50 : 50), then diluted by Saline Injection Formulation 9: EtOH : Corn oil = 10 : 90 (i.e. 100 μL EtOH → 900 μL Corn oil) Injection Formulation 10: EtOH : PEG300：Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL EtOH → 400 μLPEG300 → 50 μL Tween 80 → 450 μL Saline) Oral Formulations Oral Formulation 1: Suspend in 0.5% CMC Na (carboxymethylcellulose sodium) Oral Formulation 2: Suspend in 0.5% Carboxymethyl cellulose Example: Take the Oral Formulation 1 (Suspend in 0.5% CMC Na) as an example, if 100 mL of 2.5 mg/mL working solution is to be prepared, you can first prepare 0.5% CMC Na solution by measuring 0.5 g CMC Na and dissolve it in 100 mL ddH2O to obtain a clear solution; then add 250 mg of the product to 100 mL 0.5% CMC Na solution, to make the suspension solution (2.5 mg/mL, ready for use in animals). Oral Formulation 3: Dissolved in PEG400 Oral Formulation 4: Suspend in 0.2% Carboxymethyl cellulose Oral Formulation 5: Dissolve in 0.25% Tween 80 and 0.5% Carboxymethyl cellulose Oral Formulation 6: Mixing with food powders Note: Please be aware that the above formulations are for reference only. InvivoChem strongly recommends customers to read literature methods/protocols carefully before determining which formulation you should use for in vivo studies, as different compounds have different solubility properties and have to be formulated differently. (Please use freshly prepared in vivo formulations for optimal results.) |
| Preparing Stock Solutions | 1 mg | 5 mg | 10 mg | |
| 1 mM | 2.1617 mL | 10.8087 mL | 21.6174 mL | |
| 5 mM | 0.4323 mL | 2.1617 mL | 4.3235 mL | |
| 10 mM | 0.2162 mL | 1.0809 mL | 2.1617 mL |