2. Protein Tyrosine Kinase/RTK
  3. VEGFR PDGFR FGFR
  4. XL 999

XL 999  (Synonyms: Tyrosine kinase-IN-1)

Cat. No.: HY-100315 Purity: 99.34%
SDS COA Handling Instructions

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Kinase Assay: Kinase Inhibition Assays Kinase activities of KDR and PDGFRα are measured as the percent of ATP consumed following the kinase reaction using luciferaseluciferin-coupled chemiluminescence. Kinase reactions are initiated by combining test compound (XL 999), ATP, kinases and substrates in a 20 mL volume using 384-well microtiter plates. For KDR, the final reaction mixture contained 3 mM ATP, 1.6 mM poly(Glu, Tyr) 4:1 and 1.5 nM KDR of residues D807-V1356 with an N-terminal GST tag. For PDGFRα, the final reaction mixture contained 2 mM ATP, 10 mM MBP and 14 nM PDGFRα of residues Q551-L1089 with an N-terminal GST tag. The reaction mixture is incubated at room temperature for 4 h (KDR) or 2 h PDGFRα before a 20 mL aliquot of Kinase Glo is added and luminescence signal is measured using a Victor2 plate reader. Total ATP consumption is limited below 50%.

For research use only. We do not sell to patients.

XL 999 Chemical Structure

XL 999 Chemical Structure

CAS No. : 705946-27-6

Size Price Stock Quantity
Free Sample (0.1 - 0.5 mg)   Apply Now  
Solid + Solvent (Highly Recommended)
10 mM * 1 mL in DMSO
ready for reconstitution
 USD 77 In-stock
Solution
10 mM * 1 mL in DMSO USD 77 In-stock
Solid
5 mg USD 70 In-stock
10 mg USD 120 In-stock
25 mg USD 240 In-stock
50 mg USD 370 In-stock
100 mg USD 520 In-stock
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Customer Review

Based on 1 publication(s) in Google Scholar

XL 999 Related Antibodies

Top Publications Citing Use of Products

View All VEGFR Isoform Specific Products:

View All Isoforms
VEGFR1/Flt-1 VEGFR2/KDR/Flk-1 VEGFR3/Flt-4

View All PDGFR Isoform Specific Products:

View All Isoforms
PDGFR PDGFRβ PDGFRα

View All FGFR Isoform Specific Products:

View All Isoforms
FGFR FGFR1 FGFR2 FGFR3 FGFR4 FGF21

  • Biological Activity

  • Protocol

  • Purity & Documentation

  • References

  • Customer Review

Description

Kinase Assay: [1]Kinase Inhibition Assays Kinase activities of KDR and PDGFRα are measured as the percent of ATP consumed following the kinase reaction using luciferaseluciferin-coupled chemiluminescence. Kinase reactions are initiated by combining test compound (XL 999), ATP, kinases and substrates in a 20 mL volume using 384-well microtiter plates. For KDR, the final reaction mixture contained 3 mM ATP, 1.6 mM poly(Glu, Tyr) 4:1 and 1.5 nM KDR of residues D807-V1356 with an N-terminal GST tag. For PDGFRα, the final reaction mixture contained 2 mM ATP, 10 mM MBP and 14 nM PDGFRα of residues Q551-L1089 with an N-terminal GST tag. The reaction mixture is incubated at room temperature for 4 h (KDR) or 2 h PDGFRα before a 20 mL aliquot of Kinase Glo is added and luminescence signal is measured using a Victor2 plate reader. Total ATP consumption is limited below 50%[1].

IC50 & Target

Flt-1

4 nM (IC50)

KDR

20 nM (IC50)

PDGFRα

4 nM (IC50)

FGFR1

2 nM (IC50)

In Vivo

XL 999 shows a reasonable PK profile (AUC(0–∞)=1.9, t1/2=4.6 h). It has a favorable oral bioavailability (F=63%) in rats[1].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Molecular Weight

445.53

Formula

C26H28FN5O
CAS No.
Appearance

Solid

Color

Light brown to brown

SMILES

O=C1NC2=C(C=C(NC3CCN(CC)CC3)C=C2)/C1=C(C4=CC=CC(F)=C4)/C5=NC=C(C)N5
Shipping

Room temperature in continental US; may vary elsewhere.
Storage
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 2 years
-20°C 1 year
Solvent & Solubility
In Vitro: 

DMSO : 50 mg/mL (112.23 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.2445 mL 11.2226 mL 22.4452 mL
5 mM 0.4489 mL 2.2445 mL 4.4890 mL
View the 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, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

  • Molarity Calculator

  • Dilution Calculator

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

Mass
=
Concentration
×
Volume
×
Molecular Weight *

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

C1

×
Volume (start)

V1

=
Concentration (final)

C2

×
Volume (final)

V2

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.

  • Protocol 1

    Add each solvent one by one:  10% DMSO    40% PEG300    5% Tween-80    45% Saline

    Solubility: ≥ 2.08 mg/mL (4.67 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.08 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (20.8 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.
  • Protocol 2

    Add each solvent one by one:  10% DMSO    90% (20% SBE-β-CD in Saline)

    Solubility: ≥ 2.08 mg/mL (4.67 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.08 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (20.8 mg/mL) to 900 μL 20% SBE-β-CD in Saline, and mix evenly.

    Preparation of 20% SBE-β-CD in Saline (4°C, storage for one week): 2 g SBE-β-CD powder is dissolved in 10 mL Saline, completely dissolve until clear.
In Vivo Dissolution Calculator
Please enter the basic information of animal experiments:

Dosage

mg/kg

Animal weight
(per animal)

g

Dosing volume
(per animal)

μL

Number of animals

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
%
DMSO +
% 
+
%
Tween-80 +
%
Saline
Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
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).
Calculation results:
Working solution concentration: mg/mL
Method for preparing stock solution: mg drug dissolved in μL  DMSO (Stock solution concentration: mg/mL).
The concentration of the stock solution you require exceeds the measured solubility. The following solution is for reference only. If necessary, please contact MedChemExpress (MCE).
Method for preparing in vivo working solution for animal experiments: Take μL DMSO stock solution, add μL . μL , mix evenly, next add μL Tween 80, mix evenly, then add μL Saline.
 If the continuous dosing period exceeds half a month, please choose this protocol carefully.
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.
Purity & Documentation
References
Kinase Assay
[1]

Kinase Inhibition Assays Kinase activities of KDR and PDGFRα are measured as the percent of ATP consumed following the kinase reaction using luciferaseluciferin-coupled chemiluminescence. Kinase reactions are initiated by combining test compound (XL 999), ATP, kinases and substrates in a 20 mL volume using 384-well microtiter plates. For KDR, the final reaction mixture contained 3 mM ATP, 1.6 mM poly(Glu, Tyr) 4:1 and 1.5 nM KDR of residues D807-V1356 with an N-terminal GST tag. For PDGFRα, the final reaction mixture contained 2 mM ATP, 10 mM MBP and 14 nM PDGFRα of residues Q551-L1089 with an N-terminal GST tag. The reaction mixture is incubated at room temperature for 4 h (KDR) or 2 h PDGFRα before a 20 mL aliquot of Kinase Glo is added and luminescence signal is measured using a Victor2 plate reader. Total ATP consumption is limited below 50%[1].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.
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, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
DMSO 1 mM 2.2445 mL 11.2226 mL 22.4452 mL 56.1129 mL
5 mM 0.4489 mL 2.2445 mL 4.4890 mL 11.2226 mL
10 mM 0.2245 mL 1.1223 mL 2.2445 mL 5.6113 mL
15 mM 0.1496 mL 0.7482 mL 1.4963 mL 3.7409 mL
20 mM 0.1122 mL 0.5611 mL 1.1223 mL 2.8056 mL
25 mM 0.0898 mL 0.4489 mL 0.8978 mL 2.2445 mL
30 mM 0.0748 mL 0.3741 mL 0.7482 mL 1.8704 mL
40 mM 0.0561 mL 0.2806 mL 0.5611 mL 1.4028 mL
50 mM 0.0449 mL 0.2245 mL 0.4489 mL 1.1223 mL
60 mM 0.0374 mL 0.1870 mL 0.3741 mL 0.9352 mL
80 mM 0.0281 mL 0.1403 mL 0.2806 mL 0.7014 mL
100 mM 0.0224 mL 0.1122 mL 0.2245 mL 0.5611 mL
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XL 999 Related Classifications

Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

Keywords:

XL 999705946-27-6Tyrosine kinase-IN-1XL999XL-999VEGFRPDGFRFGFRVascular endothelial growth factor receptorPlatelet-derived growth factor receptorFibroblast growth factor receptorInhibitorinhibitorinhibit

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