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Purity: ≥98%
Syk inhibitor II, a pyrimidine-carboxamide analog, is a novel potent, cell-permeable, ATP-competitive inhibitor of Syk (Spleen tyrosine kinase) tyrosine kinase that selectively and reversibly inhibits Syk with IC50 of 41 nM. It is much less potent against PKCε, PKCβII, ZAP-70, Btk, and Itk with IC50s of 5.1, 11, 11.2, 15.5, and 22.6 µM, respectively. It has been demonstrated that Syk inhibitor II inhibits passive cutaneous anaphylaxis reactions in mice with an ID50 of 13.2 mg/kg and prevents FcεRI-mediated 5-HT release in RBL-2H3 cells in vitro with an IC50 of 460 nM. Hematopoietic cells are the primary source of expression for Spleen Tyrosine Kinase (SYK), a non-receptor cytoplasmic tyrosine kinase. Being a major mediator for several inflammatory cells, such as mast cells, B cells, neutrophils, and macrophages, SYK is a promising treatment option for inflammatory conditions as well as cancer-related indications.
| Targets |
Syk (IC50 = 41 nM); serotonin (IC50 = 460 nM); PKCε (IC50 = 5.1 μM); PKCβ2 (IC50 = 11 μM); ZAP-70 (IC50 = 11.2 μM); Btk (IC50 = 15.5 μM); Itk (IC50 = 22.6 μM)
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| ln Vitro |
Syk Inhibitor II (Compound 9a) exhibits a negligible impact on PKCε, PKCβ2, ZAP-70, Btk, and Itk, as seen by their respective IC50 values of 5.1 μM, 11 μM, 11.2 μM, 15.5 μM, and 22.6 μM [1].
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| ln Vivo |
Mice were given Syk Inhibitor II (Compound 9a; 10-100 mg/kg) subcutaneously half an hour prior to the appropriate challenge. Syk Inhibitor II has an ID50 value of 13.2 mg/kg and inhibits the reaction in a dose-dependent manner[1].
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| References |
| Molecular Formula |
C14H15F3N6O
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| Molecular Weight |
340.30
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| Exact Mass |
340.125
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| CAS # |
726695-51-8
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| Related CAS # |
Syk Inhibitor II dihydrochloride;227449-73-2;Syk Inhibitor II dihydrochloride dihydrate;1965323-05-0
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| PubChem CID |
9549296
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| Appearance |
White to off-white solid
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| Density |
1.5±0.1 g/cm3
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| Boiling Point |
541.6±60.0 °C at 760 mmHg
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| Flash Point |
281.4±32.9 °C
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| Vapour Pressure |
0.0±1.4 mmHg at 25°C
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| Index of Refraction |
1.633
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| LogP |
1.25
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| Hydrogen Bond Donor Count |
4
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| Hydrogen Bond Acceptor Count |
9
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| Rotatable Bond Count |
6
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| Heavy Atom Count |
24
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| Complexity |
422
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| Defined Atom Stereocenter Count |
0
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| SMILES |
C1(NCCN)=NC=C(C(N)=O)C(NC2=CC=CC(C(F)(F)F)=C2)=N1
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| InChi Key |
FQNFLNSVHWCZML-UHFFFAOYSA-N
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| InChi Code |
InChI=1S/C14H15F3N6O/c15-14(16,17)8-2-1-3-9(6-8)22-12-10(11(19)24)7-21-13(23-12)20-5-4-18/h1-3,6-7H,4-5,18H2,(H2,19,24)(H2,20,21,22,23)
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| Chemical Name |
2-(2-aminoethylamino)-4-[3-(trifluoromethyl)anilino]pyrimidine-5-carboxamide
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| Synonyms |
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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 |
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| 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) |
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| 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
Injection Formulation 1: DMSO : Tween 80： Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution → 50 μL Tween 80 → 850 μL Saline)(e.g. IP/IV/IM/SC) *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). View More
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)] 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). View More
Oral Formulation 3: Dissolved in PEG400 (Please use freshly prepared in vivo formulations for optimal results.) |
| Preparing Stock Solutions | 1 mg | 5 mg | 10 mg | |
| 1 mM | 2.9386 mL | 14.6929 mL | 29.3858 mL | |
| 5 mM | 0.5877 mL | 2.9386 mL | 5.8772 mL | |
| 10 mM | 0.2939 mL | 1.4693 mL | 2.9386 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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