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Avanbulin

Alias: BAL27862 BAL 27862 BAL-27862 Avanbulin
Cat No.:V5890 Purity: ≥98%
Avanbulin (BAL27862) is a potent colchicine-site-binding inhibitor of tubulin assembly.
Avanbulin
Avanbulin Chemical Structure CAS No.: 798577-91-0
Product category: New1
This product is for research use only, not for human use. We do not sell to patients.
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Product Description
Avanbulin (BAL27862) is a potent colchicine-site-binding inhibitor of tubulin assembly. Avanbulin inhibits tubulin assembly at 37 °C (IC50=1.4 μM). Avanbulin binds to tubulin with Kd of 244 nM. Avanbulin may be utilized in study/research of cancer and cell division.
Biological Activity I Assay Protocols (From Reference)
ln Vitro
Tubulin binds to avanbulin (0–4 μM) as colchicine, with an apparent Kd of 244 nM. [1]. Tubulin undergoes proteolysis when avandulin (50 μM; 0, 10, 20, 30, 60 min) is added [1]. Tiny tubulin aggregates are formed when avanbulin (33 nM; 0, 10, 20, 30, 60 min; HeLa-tubGFP cells) collapses the mitotic spindle [1]. Tubulin oligomers do not form when avandulin is present [1]. In 23 tumor cell lines, avandulin inhibits proliferation with a median relative IC50 of 13.8 nM (96 hours) [2]. GBM6 and GBM9 cell migration is inhibited by avanbulin (6 nM and 20 nM) [3]. GBM6-shEB1 and GBM6-sh0 cells, respectively, respond to avanbulin (6 nM and 20 nM) to initiate GBM6 astrocyte development in an EB1-dependent manner [3]. MG132 (10 μM; 2 h) treated hTert-RPE1 eGFP-α-tubulin cells show decreased kinetochore microtubule (KT–MT) occupancy in response to avanbulin (12 nM; 4 h) [4]. Avanbulin (12 nM; 4 h) exhibits intact spindle shape, decreases the average KT distance of cells, and does not exhibit any chromosome alignment problems [4].
Cell Assay
Cytotoxicity assay [2]
Cell Types: 23 cell lines, including RD, TC-71, SJ-GBM2, NB-1643.
Tested Concentrations: 0.1 nM-1.0 μM
Incubation Duration: 96 hrs (hours)
Experimental Results: Induced cell growth inhibition with a median relative IC50 of 13.8 nM.
References

[1]. The novel microtubule-destabilizing drug avanbulin binds to the colchicine site of tubulin with distinct effects on microtubule organization. J Mol Biol. 2014 Apr 17;426(8):1848-60.

[2]. Initial testing (stage 1) of BAL101553, a novel tubulin binding agent, by the pediatric preclinical testing program. Pediatr Blood Cancer. 2015 Jun;62(6):1106-9.

[3]. The Novel Tubulin-Binding Checkpoint Activator BAL101553 Inhibits EB1-Dependent Migration and Invasion and Promotes Differentiation of Glioblastoma Stem-like Cells. Mol Cancer Ther. 2016 Nov;15(11):2740-2749.

[4]. Complete microtubule-kinetochore occupancy favours the segregation of merotelic attachments. Nat Commun. 2018;9(1):2042. Published 2018 May 23.

These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C20H17N7O2
Molecular Weight
387.39
Exact Mass
387.144
CAS #
798577-91-0
PubChem CID
11176685
Appearance
White to yellow solid powder
Density
1.4±0.1 g/cm3
Boiling Point
771.5±70.0 °C at 760 mmHg
Flash Point
420.4±35.7 °C
Vapour Pressure
0.0±2.6 mmHg at 25°C
Index of Refraction
1.731
LogP
4.25
Hydrogen Bond Donor Count
2
Hydrogen Bond Acceptor Count
8
Rotatable Bond Count
7
Heavy Atom Count
29
Complexity
615
Defined Atom Stereocenter Count
0
InChi Key
LSFOZQQVTWFMNS-UHFFFAOYSA-N
InChi Code
InChI=1S/C20H17N7O2/c21-10-3-11-23-19-18(25-29-26-19)20-24-15-4-1-2-5-16(15)27(20)12-17(28)13-6-8-14(22)9-7-13/h1-2,4-9H,3,11-12,22H2,(H,23,26)
Chemical Name
3-[[4-[1-[2-(4-aminophenyl)-2-oxoethyl]benzimidazol-2-yl]-1,2,5-oxadiazol-3-yl]amino]propanenitrile
Synonyms
BAL27862 BAL 27862 BAL-27862 Avanbulin
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)
Solubility Data
Solubility (In Vitro)
DMSO : ~250 mg/mL (~645.34 mM)
Solubility (In Vivo)
Solubility in Formulation 1: ≥ 2.08 mg/mL (5.37 mM) (saturation unknown) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 20.8 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: ≥ 2.08 mg/mL (5.37 mM) (saturation unknown) in 10% DMSO + 90% Corn Oil (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 20.8 mg/mL clear DMSO stock solution to 900 μL of corn oil and mix evenly.

 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 2.5814 mL 12.9069 mL 25.8138 mL
5 mM 0.5163 mL 2.5814 mL 5.1628 mL
10 mM 0.2581 mL 1.2907 mL 2.5814 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.

Calculator

Molarity Calculator allows you to calculate the mass, volume, and/or concentration required for a solution, as detailed below:

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An example of molarity calculation using the molarity calculator is shown below:
What is the mass of compound required to make a 10 mM stock solution in 5 ml of DMSO given that the molecular weight of the compound is 350.26 g/mol?
  • Enter 350.26 in the Molecular Weight (MW) box
  • Enter 10 in the Concentration box and choose the correct unit (mM)
  • Enter 5 in the Volume box and choose the correct unit (mL)
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  • The answer of 17.513 mg appears in the Mass box. In a similar way, you may calculate the volume and concentration.

Dilution Calculator allows you to calculate how to dilute a stock solution of known concentrations. For example, you may Enter C1, C2 & V2 to calculate V1, as detailed below:

What volume of a given 10 mM stock solution is required to make 25 ml of a 25 μM solution?
Using the equation C1V1 = C2V2, where C1=10 mM, C2=25 μM, V2=25 ml and V1 is the unknown:
  • Enter 10 into the Concentration (Start) box and choose the correct unit (mM)
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  • Enter 25 into the Volume (End) box and choose the correct unit (mL)
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  • The answer of 62.5 μL (0.1 ml) appears in the Volume (Start) box
g/mol

Molecular Weight Calculator allows you to calculate the molar mass and elemental composition of a compound, as detailed below:

Note: Chemical formula is case sensitive: C12H18N3O4  c12h18n3o4
Instructions to calculate molar mass (molecular weight) of a chemical compound:
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Definitions of molecular mass, molecular weight, molar mass and molar weight:
  • Molecular mass (or molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). (1 u is equal to 1/12 the mass of one atom of carbon-12)
  • Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.
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Reconstitution Calculator allows you to calculate the volume of solvent required to reconstitute your vial.

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In vivo Formulation Calculator (Clear solution)
Step 1: Enter information below (Recommended: An additional animal to make allowance for loss during the experiment)
Step 2: Enter in vivo formulation (This is only a calculator, not the exact formulation for a specific product. Please contact us first if there is no in vivo formulation in the solubility section.)
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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.

Clinical Trial Information
NCT Number Recruitment interventions Conditions Sponsor/Collaborators Start Date Phases
NCT02490800 COMPLETEDWITH RESULTS Drug: Lisavanbulin Phase 1 dose escalation portion
Drug: Lisavanbulin Phase 2a expansion portion
Neoplasms Basilea Pharmaceutica 2015-05-20 Phase 1
Phase 2
NCT02895360 COMPLETEDWITH RESULTS Drug: BAL101553
Drug: BAL101553 at MTD
Neoplasms Basilea Pharmaceutica 2016-08-24 Phase 1
Phase 2
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