| Size | Price | Stock | Qty |
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| 5mg |
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| 10mg |
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| 25mg |
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| 50mg |
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| 100mg |
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| 250mg |
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| 500mg |
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| Other Sizes |
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| Targets |
ASK1 (IC50 = 3 μM)
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|---|---|
| ln Vitro |
The selectivity of NQDI-1 is examined in vitro using four serine/threonine protein kinases (protein kinase CK2, c-Jun N-terminal kinase 3, Rho-associated protein kinase 1, and Aurora A), and three tyrosine protein kinases (FGFR1, hHGFR, and endothelial TEK tyrosine kinase, or Tie2). The outcomes demonstrate that NQDI-1 is a specific ASK1 inhibitor. NQDI-1 inhibits the activity of FGFR1 protein kinase (44% residual activity). With a Ki of 500 nM, NQDI-1 blocks ASK1. When compared to the phosphodonor substrate ATP, NQDI-1's inhibition of ASK1 is competitive[1].
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| ln Vivo |
Following a brain injury, 250 nmol NQDI-1 in DMSO is injected intracerebrally. Western blotting is used to analyze the expression of ASK1 in the hypoxia-ischemia (HI), DMSO, NQDI-1, and sham groups.Results show that NQDI-1 significantly inhibits ASK1 expression in the brain cortex when compared to the HI and DMSO groups. Furthermore, immunofluorescence staining shows that NQDI-1 inhibits ASK1 expression in the cortex of the brain. The current study also identifies the expression of ASK1's downstream targets. When compared to the HI and DMSO groups, NQDI-1 significantly lowers the expression levels of p-JNK, p-c-Jun, p53, and caspase 3. In the group that received NQDI-1 treatment, immunofluorescence also revealed low expression of p-JNK in the cerebral cortex[2].
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| Enzyme Assay |
In vitro kinase assay (γ-32P-ATP method) is used to assess the enzyme activity of human protein kinases ASK1, Aurora A, ROCK1, HGFR, FGFR1, Tie2, JNK3, and CK2. Each reaction mixture contains 6 μL of buffer solution (25 mM MOPS, pH 7.2, 2.5 mM EGTA, 2.5 mM EDTA, 0.5 mM DTT, 0.25 mg/mL BSA, 20 mM β-glycerophosphate), 3 μL of substrate solution (MBP, Long S6 kinase substrate peptide, KKKSPGEYVNIEFG, IGF-IRtide (12-527), TK substrate 2, JNK3tide, or RRRDDDSDDD for each kinase, respectively) (5.0 μg/μL), 0.3 μL of enzyme (protein kinase catalytic subunit, 0.1 μg/μL≈32 mU/μL), and 10.25 μL of H2O. At room temperature, the reaction mixture (19 μL total volume) is swiftly added to 1.5 mL tubes. Stock solutions of inhibitors, like NQDI-1, are made in DMSO with a 1 mM inhibitor concentration. In the reaction, the amount of DMSO is not greater than 3%. After that, each tube receives 1 L of an inhibitor solution in DMSO, which is pipetted into each tube and mixed. A separate ATP solution is made. 0.05 mCi of γ-[P32]ATP is extracted for each sample (specific activity of 100 μCi/M). 100 μM is the combined concentration of labeled and unlabeled ATP. The 150 μM ATP, 30 mM MgCl2, 15 mM MOPS, pH 7.2 ATP solution is added to start the reaction. The reaction lasts 20 minutes at 30 °C. 20 μL of 0.5 M orthophosphoric acid are added to stop the reaction. Following that, the reaction mixture is loaded onto the cellulose phosphate paper 20 mm filter disks. At room temperature, filters are washed three times with 0.075 M orthophosphoric acid, then dried. By using a Tri-Carb 2800-TR liquid scintillation analyzer, dried filters are counted in order to detect products. A positive control is then performed by substituting 1 μL of DMSO for the inhibitor stock solution in the reaction volume[1].
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| References |
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| Molecular Formula |
C19H13NO4
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|---|---|
| Molecular Weight |
319.31
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| Exact Mass |
319.0845
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| Elemental Analysis |
C, 71.47; H, 4.10; N, 4.39; O, 20.04
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| CAS # |
175026-96-7
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| Related CAS # |
175026-96-7
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| Appearance |
Solid powder
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| SMILES |
CCOC(=O)C1=C2C3=CC=CC=C3C(=O)C4=C2C(=CC=C4)NC1=O
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| InChi Key |
UFJGFNHRMPMALC-UHFFFAOYSA-N
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| InChi Code |
InChI=1S/C19H13NO4/c1-2-24-19(23)16-15-10-6-3-4-7-11(10)17(21)12-8-5-9-13(14(12)15)20-18(16)22/h3-9H,2H2,1H3,(H,20,22)
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| Chemical Name |
ethyl 8,15-dioxo-14-azatetracyclo[7.7.1.02,7.013,17]heptadeca-1(16),2,4,6,9(17),10,12-heptaene-16-carboxylate
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| Synonyms |
NQDI 1; NQDI1; NQDI-1
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| HS Tariff Code |
2934.99.9001
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| 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)
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| Solubility (In Vitro) |
DMSO: ~21 mg/mL (~65.8 mM)
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|---|---|
| Solubility (In Vivo) |
Solubility in Formulation 1: 0.71 mg/mL (2.22 mM) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), suspension solution; with sonication.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 7.1 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 to the above solution and mix evenly; then add 450 μL normal saline to adjust the volume to 1 mL. Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution. Solubility in Formulation 2: 0.71 mg/mL (2.22 mM) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (add these co-solvents sequentially from left to right, and one by one), suspension solution; with ultrasonication. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 7.1 mg/mL clear DMSO stock solution to 900 μL of 20% SBE-β-CD physiological saline solution and mix evenly. 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. View More
Solubility in Formulation 3: 5%dmso+40%PEG300+5%tween-80+ddH2O: 0.5mg/mL |
| Preparing Stock Solutions | 1 mg | 5 mg | 10 mg | |
| 1 mM | 3.1318 mL | 15.6588 mL | 31.3175 mL | |
| 5 mM | 0.6264 mL | 3.1318 mL | 6.2635 mL | |
| 10 mM | 0.3132 mL | 1.5659 mL | 3.1318 mL |
*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.
Calculation results
Working concentration： mg/mL；
Method for preparing DMSO stock solution： mg drug pre-dissolved in μL DMSO (stock solution 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 stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O，mix and clarify.
(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
(2) Be sure to add the solvent(s) in order.
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