1. Metabolic Enzyme/Protease Anti-infection Cell Cycle/DNA Damage
  2. Endogenous Metabolite Enterovirus HCV Topoisomerase SARS-CoV
  3. NHC-triphosphate tetraammonium

NHC-triphosphate tetraammonium 

Cat. No.: HY-135867E Purity: 96.05%
COA Handling Instructions

NHC-triphosphate tetraammonium is an active phosphorylated intracellular metabolite of β-d-N4-Hydroxycytidine (NHC) (HY-125033) as a triphosphate form. NHC-triphosphate tetraammonium is a weak alternative substrate for the viral polymerase and can be incorporated into HCV replicon RNA.

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

NHC-triphosphate tetraammonium Chemical Structure

NHC-triphosphate tetraammonium Chemical Structure

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1 mg USD 480 In-stock
5 mg USD 1200 In-stock
10 mg USD 1950 In-stock
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Based on 7 publication(s) in Google Scholar

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Description

NHC-triphosphate tetraammonium is an active phosphorylated intracellular metabolite of β-d-N4-Hydroxycytidine (NHC) (HY-125033) as a triphosphate form[1]. NHC-triphosphate tetraammonium is a weak alternative substrate for the viral polymerase and can be incorporated into HCV replicon RNA[1][2].

In Vitro

In an intracellular metabolism assay, HCV replicon cells are treated with 10 μM?3H-labeled NHC, and intracellular nucleotide levels are determined after 1, 2 and 8 hours incubations. NHC is rapidly convered into the mono-, di-, and triphosphate forms, and NHC-TP reaches up to 71.12 pM after 8 hours[1].
NHC-triphosphate tetraammonium (NHC-TP) (5-40 μM) absence leads to full-length polymerization products, it can be a weak alternative substrate. In addition, incorporation of NHC-TP instead of CTP increases the molecular weight of the polymerization product by 16 (one extra oxygen) for each event and an obvious electrophoretic shift is observed in cell-free HCV NS5B polymerization reactions[1].
Huh-7 cells are incubated with (10-50 μM; 4 h) NHC or a McGuigan phosphoramidate prodrug of NHC. Intracellular levels of the parental compounds and phosphorylated metabolites are measured using LC-MS/MS. Small amounts of NHC-monophosphate (MP) and NHC-diphosphate (DP) can be observed, while NHC-triphosphate tetraammonium (HY-135867) remains the most abundant metabolite[2].
NHC-triphosphate tetraammonium (NHC-TP) metabolite may directly target the viral polymerase and behave as a nonobligate chain terminator.?It plays a prominent role in inhibiting early negative-strand RNA synthesis, either through chain termination or mutagenesis, which may in turn interfere with correct replicase complex formation.

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

Molecular Weight

567.28

Formula

C9H28N7O15P3

Appearance

Solid

Color

White to off-white

SMILES

O[C@H]1[C@H](N(C=C/C2=N/O)C(N2)=O)O[C@H](COP(OP(OP(O)(O)=O)(O)=O)(O)=O)[C@H]1O.N.N.N.N

Shipping

Shipping with dry ice.

Storage

-80°C, protect from light, stored under nitrogen

Solvent & Solubility
In Vitro: 

H2O : 200 mg/mL (352.56 mM; Need ultrasonic and warming)

DMSO : 170 mg/mL (299.68 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 1.7628 mL 8.8140 mL 17.6280 mL
5 mM 0.3526 mL 1.7628 mL 3.5256 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, 6 months (protect from light, stored under nitrogen). When stored at -80°C, please use it within 6 months.

* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.

  • Molarity Calculator

  • Dilution Calculator

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

Mass
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Concentration
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Volume
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Molecular Weight *

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

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

C1

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Volume (start)

V1

=
Concentration (final)

C2

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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: ≥ 4.25 mg/mL (7.49 mM); Clear solution

    This protocol yields a clear solution of ≥ 4.25 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (42.5 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: ≥ 4.25 mg/mL (7.49 mM); Clear solution

    This protocol yields a clear solution of ≥ 4.25 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (42.5 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.

For the following dissolution methods, please prepare the working solution directly. It is recommended to prepare fresh solutions and use them promptly within a short period of time.
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:  PBS

    Solubility: 100 mg/mL (176.28 mM); Clear solution; Need ultrasonic

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.
Calculation results:
Working solution concentration: mg/mL
This product has good water solubility, please refer to the measured solubility data in water/PBS/Saline for details.
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).
Purity & Documentation

Purity: 96.05%

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, 6 months (protect from light, stored under nitrogen). When stored at -80°C, please use it within 6 months.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
DMSO / H2O 1 mM 1.7628 mL 8.8140 mL 17.6280 mL 44.0699 mL
5 mM 0.3526 mL 1.7628 mL 3.5256 mL 8.8140 mL
10 mM 0.1763 mL 0.8814 mL 1.7628 mL 4.4070 mL
15 mM 0.1175 mL 0.5876 mL 1.1752 mL 2.9380 mL
20 mM 0.0881 mL 0.4407 mL 0.8814 mL 2.2035 mL
25 mM 0.0705 mL 0.3526 mL 0.7051 mL 1.7628 mL
30 mM 0.0588 mL 0.2938 mL 0.5876 mL 1.4690 mL
40 mM 0.0441 mL 0.2203 mL 0.4407 mL 1.1017 mL
50 mM 0.0353 mL 0.1763 mL 0.3526 mL 0.8814 mL
60 mM 0.0294 mL 0.1469 mL 0.2938 mL 0.7345 mL
80 mM 0.0220 mL 0.1102 mL 0.2203 mL 0.5509 mL
100 mM 0.0176 mL 0.0881 mL 0.1763 mL 0.4407 mL

* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.

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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.

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NHC-triphosphate tetraammonium
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HY-135867E
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