BO-264

Alias: BO-264; BO 264; BO264
Cat No.:V37655 Purity: ≥98%
BO-264 is a novel and orally bioactive transforming acidic coiled-coil 3 (TACC3) inhibitor with an IC50 of 188 nM and a Kd of 1.5 nM.
BO-264 Chemical Structure CAS No.: 2408648-20-2
Product category: FGFR
This product is for research use only, not for human use. We do not sell to patients.
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Product Description

BO-264 is a novel and orally bioactive transforming acidic coiled-coil 3 (TACC3) inhibitor with an IC50 of 188 nM and a Kd of 1.5 nM. Through spindle assembly checkpoint (SAC)-dependent mitotic arrest, DNA damage, and apoptosis, BO-264 showed superior anti-proliferative activity compared to the two currently known TACC3 inhibitors, particularly in aggressive breast cancer subtypes, basal and HER2+. The cytotoxicity against normal breast cells was minimal.

Biological Activity I Assay Protocols (From Reference)
Targets
FGFR3; TACC3 (Kd = 1.5 nM); TACC3 (IC50 = 188 nM)
ln Vitro
BO-264 substantially reduces centrosomal TACC3 in interphase and mitosis. In the NCI-60 cell line panel, which compromises nine distinct cancer types, BO-264 exhibits strong anti-proliferative activity. BO-264 is a powerful growth inhibitor of cells expressing the FGFR3-TACC3 fusion, an oncogenic driver found in a variety of cancers.[1]
ln Vivo
BO-264 (25 mg/kg; oral administration; daily; for 3-4 weeks; female nude mice) treatment shows a significant suppression of tumor growth. Since BO-264 does not result in organ toxicity or a considerable reduction in body weight, it is well tolerated.
Cell Assay
Briefly, BO-264 (1 μM) or vehicle is incubated for 6 hours with JIMT-1 cells. Protease and phosphatase inhibitors are added to Tris-buffered saline (TBS) buffer, which is used to resuscitate cell pellets following treatment. Six PCR tubes containing the cell suspension are filled, and the temperature is raised to 45, 46, 47, 48, 49, and 50 °C for five minutes. Three consecutive cycles of freeze-thaw with liquid nitrogen are then used to lyse the cells. Western blot analysis and SDS-PAGE are used to analyze soluble proteins after they are collected by centrifugation at 20,000 g for 20 minutes at 4 °C.
Animal Protocol
female nude mice with xenografts of HER2-positive JIMT-1 cell line
25 mg/kg
Oral gavage
References

[1]. Mol Cancer Ther . 2020 Jun;19(6):1243-1254.

These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C18H19N5O3
Molecular Weight
353.375163316727
Exact Mass
353.15
Elemental Analysis
C, 61.18 H, 5.42 N, 19.82 O, 13.58
CAS #
2408648-20-2
Related CAS #
2408648-20-2
Appearance
Solid powder
SMILES
COC1=CC=C(C=C1)C2=NOC(=C2)NC3=NC(=NC=C3)N4CCOCC4
InChi Key
WRCGBYNVBFVRTN-UHFFFAOYSA-N
InChi Code
InChI=1S/C18H19N5O3/c1-24-14-4-2-13(3-5-14)15-12-17(26-22-15)20-16-6-7-19-18(21-16)23-8-10-25-11-9-23/h2-7,12H,8-11H2,1H3,(H,19,20,21)
Chemical Name
3-(4-methoxyphenyl)-N-(2-morpholin-4-ylpyrimidin-4-yl)-1,2-oxazol-5-amine
Synonyms
BO-264; BO 264; BO264
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: 50~71 mg/mL (141.5~200.9 mM)
Solubility (In Vivo)
Solubility in Formulation 1: ≥ 2.08 mg/mL (5.89 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 (5.89 mM) (saturation unknown) in 10% DMSO + 90% (20% SBE-β-CD in 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 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.

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Solubility in Formulation 3: ≥ 2.08 mg/mL (5.89 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 2.8298 mL 14.1491 mL 28.2981 mL
5 mM 0.5660 mL 2.8298 mL 5.6596 mL
10 mM 0.2830 mL 1.4149 mL 2.8298 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

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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?
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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:
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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:
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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.

Biological Data
  • BO-264 is a novel TACC3 inhibitor binding to TACC3. Mol Cancer Ther . 2020 Jun;19(6):1243-1254.
  • BO-264 is more effective than other available TACC3 inhibitors, SPL-B and KHS101, specifically targeting cancer cells. Mol Cancer Ther . 2020 Jun;19(6):1243-1254.
  • BO-264 shows remarkable anticancer activity in FGFR3–TACC3 fusion protein–harboring cell lines and in NCI-60 cancer cell lines. Mol Cancer Ther . 2020 Jun;19(6):1243-1254.
  • BO-264 significantly impairs tumor growth and improves survival in in vivo xenograft and syngeneic models without major toxicity. Mol Cancer Ther . 2020 Jun;19(6):1243-1254.
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