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5-NIdR (1-(β-D-2-Deoxyribofuranosyl)-5-nitroindole)

Cat No.:V52491 Purity: ≥98%
5-NIdR (1-(β-D-2-Deoxyribofuranosyl)-5-nitroindole) is an artificial nucleoside with the ability to inhibit the replication of DNA damage produced by Temozolomide .
5-NIdR (1-(β-D-2-Deoxyribofuranosyl)-5-nitroindole)
5-NIdR (1-(β-D-2-Deoxyribofuranosyl)-5-nitroindole) Chemical Structure CAS No.: 191421-10-0
Product category: Apoptosis
This product is for research use only, not for human use. We do not sell to patients.
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10mg
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500mg
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Product Description
5-NIdR (1-(β-D-2-Deoxyribofuranosyl)-5-nitroindole) is an artificial nucleoside with the ability to inhibit the replication of DNA damage produced by Temozolomide . 5-NIdR causes apoptosis in cancer cells and arrests the cell cycle in the G0 phase. 5-NIdR enhances the antitumor efficacy of temozolomide in a mouse glioblastoma model.
5-NIdR (CAS 191421-10-0), also known as 5-Nitroindole-2′-deoxyriboside or 1-(β-D-2-Deoxyribofuranosyl)-5-nitroindole, is a synthetic, non-natural nucleoside analog distinguished by its 5-nitroindole base. It is a potent inhibitor of translesion DNA synthesis (TLS) and causes apoptosis in cancer cells and arrests the cell cycle in the G0 phase.
Biological Activity I Assay Protocols (From Reference)
Targets
The primary target of 5-NIdR is translesion DNA synthesis (TLS), a process that allows cells to replicate damaged DNA. It is a potent inhibitor of TLS activity. Conversion of this compound to the corresponding nucleoside triphosphate, 5-nitroindolyl-2'-deoxyriboside triphosphate, in vivo creates a potent inhibitor of several human DNA polymerases that can replicate damaged DNA. The compound causes apoptosis in cancer cells and arrests the cell cycle in the G0 phase.
ln Vitro
In a dose-dependent way, 5-NIdR (12.5-100 μM; 24-72 hours) suppresses the development of human glioblastoma cell lines (U87, A172, and SW1088) [1]. In U87 cells, 5-NIdR (1-100 μg/mL; 72 h) causes apoptosis, while 100 μg/mL overnight incubation stops the cell cycle in the G0 phase [1].
In vitro, 5-NIdR is a potent inhibitor of translesion DNA synthesis (TLS) activity. It causes apoptosis in cancer cells and arrests the cell cycle in the G0 phase. The compound enhances the antitumor efficacy of temozolomide in a mouse glioblastoma model. It is widely applied in cancer and tumor microenvironment research to study hypoxia-driven genomic instability, therapy resistance, and cellular responses to oxygen deprivation.
ln Vivo
In a mouse xenograft model of glioblastoma, 5-NIdR (100 mg/kg; i.p.; 5 consecutive days) in conjunction with temozolomide (40 mg/kg) produced total tumor shrinkage. Temozolomide by itself can only slow the growth of tumors [1].
In vivo, 5-NIdR enhances the antitumor efficacy of temozolomide in a mouse glioblastoma model. The compound's conversion to the corresponding nucleoside triphosphate in vivo creates a potent inhibitor of several human DNA polymerases that can replicate damaged DNA. It is used in vivo models to study hypoxia-driven genomic instability and therapy resistance.
Enzyme Assay
In vitro enzyme/receptor binding assays for 5-NIdR typically involve studying its effects on DNA polymerases involved in translesion DNA synthesis. The compound is converted to its triphosphate form and tested for inhibition of human DNA polymerases. Polymerase activity is measured using radioactive or fluorescent nucleotide incorporation assays. The IC50 values are calculated from dose-response curves. The compound demonstrates potent inhibition of TLS polymerases.
Cell Assay
In vitro cellular assays for 5-NIdR involve testing its effects on cancer cell proliferation and apoptosis. Cancer cells are treated with varying concentrations of 5-NIdR (0.1-100 µM) for 24-72 hours. Cell viability is assessed using MTT or CCK-8 assays. Apoptosis is measured by Annexin V/PI staining and caspase activity assays. Cell cycle analysis is performed by flow cytometry. The compound causes apoptosis and G0 phase arrest in cancer cells.
Animal Protocol
In vivo animal studies for 5-NIdR involve efficacy testing in tumor-bearing models. Mice implanted with glioblastoma cells are treated with 5-NIdR alone or in combination with temozolomide. Tumor volume and body weight are monitored over 2-4 weeks. The compound enhances the antitumor efficacy of temozolomide in a mouse glioblastoma model.
ADME/Pharmacokinetics
5-NIdR has a molecular formula of C13H14N2O5 and a molecular weight of 278.26. It appears as a light yellow to yellow solid with a purity of 98%+. The compound is a synthetic, non-natural nucleoside analog. It is intended for research use only and is not for human consumption.
Toxicity/Toxicokinetics
The toxicity profile of 5-NIdR has not been extensively characterized. As a nucleoside analog, it may have cytotoxic effects similar to other antimetabolites. Standard toxicity studies would include assessment of body weight changes, hematological parameters, and histopathological examination of major organs in animal models. The compound is intended for research use only and is not approved for clinical use.
References

[1]. Inhibition of Translesion DNA Synthesis as a Novel Therapeutic Strategy to Treat Brain Cancer. Cancer Res. 2018 Feb 15;78(4):1083-1096.

Additional Infomation
5-NIdR (CAS 191421-10-0) is a synthetic, non-natural nucleoside analog distinguished by its 5-nitroindole base. It has a molecular formula of C13H14N2O5 and a molecular weight of 278.26. The compound is a potent inhibitor of translesion DNA synthesis (TLS) and causes apoptosis in cancer cells and arrests the cell cycle in the G0 phase. It enhances the antitumor efficacy of temozolomide in a mouse glioblastoma model. It is intended for research use only and is not approved for clinical use.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C13H14N2O5
Molecular Weight
278.26
Exact Mass
278.09
CAS #
191421-10-0
PubChem CID
15817525
Appearance
Light yellow to yellow solid powder
LogP
1.713
Hydrogen Bond Donor Count
2
Hydrogen Bond Acceptor Count
5
Rotatable Bond Count
2
Heavy Atom Count
20
Complexity
374
Defined Atom Stereocenter Count
3
SMILES
C1[C@@H]([C@H](O[C@H]1N2C=CC3=C2C=CC(=C3)[N+](=O)[O-])CO)O
InChi Key
ODPRBLIUAVWXNM-YNEHKIRRSA-N
InChi Code
InChI=1S/C13H14N2O5/c16-7-12-11(17)6-13(20-12)14-4-3-8-5-9(15(18)19)1-2-10(8)14/h1-5,11-13,16-17H,6-7H2/t11-,12+,13+/m0/s1
Chemical Name
(2R,3S,5R)-2-(hydroxymethyl)-5-(5-nitroindol-1-yl)oxolan-3-ol
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)
May dissolve in DMSO (in most cases), if not, try other solvents such as H2O, Ethanol, or DMF with a minute amount of products to avoid loss of samples
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
(e.g. IP/IV/IM/SC)
Injection Formulation 1: DMSO : Tween 80: Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution 50 μL Tween 80 850 μL Saline)
*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 : PEG300Tween 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).
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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)]
*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.
Injection Formulation 5: 2-Hydroxypropyl-β-cyclodextrin : Saline = 50 : 50 (i.e. 500 μL 2-Hydroxypropyl-β-cyclodextrin 500 μL Saline)
Injection Formulation 6: DMSO : PEG300 : castor oil : Saline = 5 : 10 : 20 : 65 (i.e. 50 μL DMSO 100 μLPEG300 200 μL castor oil 650 μL Saline)
Injection Formulation 7: Ethanol : Cremophor : Saline = 10: 10 : 80 (i.e. 100 μL Ethanol 100 μL Cremophor 800 μL Saline)
Injection Formulation 8: Dissolve in Cremophor/Ethanol (50 : 50), then diluted by Saline
Injection Formulation 9: EtOH : Corn oil = 10 : 90 (i.e. 100 μL EtOH 900 μL Corn oil)
Injection Formulation 10: EtOH : PEG300Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL EtOH 400 μLPEG300 50 μL Tween 80 450 μL 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).
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Oral Formulation 3: Dissolved in PEG400
Oral Formulation 4: Suspend in 0.2% Carboxymethyl cellulose
Oral Formulation 5: Dissolve in 0.25% Tween 80 and 0.5% Carboxymethyl cellulose
Oral Formulation 6: Mixing with food powders


Note: Please be aware that the above formulations are for reference only. InvivoChem strongly recommends customers to read literature methods/protocols carefully before determining which formulation you should use for in vivo studies, as different compounds have different solubility properties and have to be formulated differently.

 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 3.5938 mL 17.9688 mL 35.9376 mL
5 mM 0.7188 mL 3.5938 mL 7.1875 mL
10 mM 0.3594 mL 1.7969 mL 3.5938 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?
  • 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)
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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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  • 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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