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NSC139021 (ERGi-USU)

Alias: NSC-139021; ERGi-USU; NSC 139021; ERGi USU; NSC139021; ERGiUSU;
Cat No.:V5041 Purity: ≥98%
NSC139021 (also known as ERGi-USU) is a novel, potent and highly selective inhibitor for the growth of ERG-positive cancer cells with IC50s ranging from 30 to 400 nM.
NSC139021 (ERGi-USU)
NSC139021 (ERGi-USU) Chemical Structure CAS No.: 1147-56-4
Product category: New10
This product is for research use only, not for human use. We do not sell to patients.
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Purity & Quality Control Documentation

Purity: ≥98%

Product Description

NSC139021 (also known as ERGi-USU) is a novel, potent and highly selective inhibitor for the growth of ERG-positive cancer cells with IC50s ranging from 30 to 400 nM.

Biological Activity I Assay Protocols (From Reference)
ln Vitro
NSC139021 mostly suppresses the proliferation of ERG-positive cancer cell lines while having no effect on ERG-negative tumor cell lines, normal prostate cells, or endothelial cells. For sensitive cell lines, NSC139021's IC50 for inhibiting cell growth ranged from 30 nM to 400 nM. When combined, NSC139021 and enzalutamide had additive effects on the development of VCaP cells. NSC139021 directly binds the atypical kinase RIOK2, which regulates ribosome biogenesis, and causes ribosomal stress signals, according to kinase screening [1].
ln Vivo
Treatment with NSC139021 prevented ERG-positive VCaP tumor xenografts from growing without showing any signs of harm. Tumor growth was considerably (P<0.05, P<0.005) suppressed in the treatment groups on day 26, which corresponded to a 44% (100 mg/kg) and 65% (150 mg/kg) decrease in tumor burden. At the 100 mg/kg and 150 mg/kg dosages, no notable toxicities were noted, such as weight loss, somnolence, diarrhea, lack of appetite, respiratory distress, or overall drug-related toxicity. [1].
References

[1]. Identification of a small molecule that selectively inhibits ERG-positive cancer cell growth. Cancer Res. 2018 Apr 30. pii: canres.2949.2017.

These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C13H9N3OS
Molecular Weight
255.2951
Exact Mass
255.047
CAS #
1147-56-4
PubChem CID
93572
Appearance
Pink to red solid powder
Density
1.4g/cm3
Boiling Point
523.251ºC at 760 mmHg
Melting Point
138-139 °C
Flash Point
270.253ºC
Vapour Pressure
0mmHg at 25°C
Index of Refraction
1.728
LogP
4.417
Hydrogen Bond Donor Count
1
Hydrogen Bond Acceptor Count
5
Rotatable Bond Count
2
Heavy Atom Count
18
Complexity
313
Defined Atom Stereocenter Count
0
SMILES
S1C([H])=C([H])N=C1/N=N/C1=C(C([H])=C([H])C2=C([H])C([H])=C([H])C([H])=C21)O[H]
InChi Key
IOMXCGDXEUDZAK-UHFFFAOYSA-N
InChi Code
InChI=1S/C13H9N3OS/c17-11-6-5-9-3-1-2-4-10(9)12(11)15-16-13-14-7-8-18-13/h1-8,17H
Chemical Name
1-(1,3-thiazol-2-yldiazenyl)naphthalen-2-ol
Synonyms
NSC-139021; ERGi-USU; NSC 139021; ERGi USU; NSC139021; ERGiUSU;
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 : ≥ 62 mg/mL (~242.85 mM)
Solubility (In Vivo)
Solubility in Formulation 1: ≥ 2.5 mg/mL (9.79 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 25.0 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: ≥ 2.5 mg/mL (9.79 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 25.0 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 3.9170 mL 19.5848 mL 39.1696 mL
5 mM 0.7834 mL 3.9170 mL 7.8339 mL
10 mM 0.3917 mL 1.9585 mL 3.9170 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:

  • Calculate the Mass of a compound required to prepare a solution of known volume and concentration
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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)
  • Click the “Calculate” button
  • 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)
  • Enter 25 into the Concentration (End) box and select the correct unit (mM)
  • Enter 25 into the Volume (End) box and choose the correct unit (mL)
  • Click the “Calculate” button
  • 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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  • The answer appears in the Volume (to add to vial) box
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.

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