1. Anti-infection Cell Cycle/DNA Damage
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  3. iPAF1C

iPAF1C is a inhibitor of the polymerase-associated factor 1 complex (PAF1C) with specific targeting to the PAF1 binding groove of CTR9 (a key subunit of PAF1C). iPAF1C disrupts PAF1C assembly by interfering with the PAF1-CTR9 interaction. iPAF1C selectively impairs BRD4-mediated recruitment of PAF1 to chromatin at hypoxia-responsive genes and inhibits RNA polymerase II (RNAPII) pause release. iPAF1C increases the population of HIV-1 NL4.3 Nef-IRES-GFP infected primary human CD4+T cells in a dose-dependent manner. PAF1C can be used for the study of infection and diseases associated with abnormal hypoxic adaptation (e.g., cancers, neurological disorders).

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iPAF1C

iPAF1C Chemical Structure

CAS No. : 950403-60-8

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Solid + Solvent (Highly Recommended)
10 mM * 1 mL in DMSO
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Description

iPAF1C is a inhibitor of the polymerase-associated factor 1 complex (PAF1C) with specific targeting to the PAF1 binding groove of CTR9 (a key subunit of PAF1C). iPAF1C disrupts PAF1C assembly by interfering with the PAF1-CTR9 interaction. iPAF1C selectively impairs BRD4-mediated recruitment of PAF1 to chromatin at hypoxia-responsive genes and inhibits RNA polymerase II (RNAPII) pause release. iPAF1C increases the population of HIV-1 NL4.3 Nef-IRES-GFP infected primary human CD4+T cells in a dose-dependent manner. PAF1C can be used for the study of infection and diseases associated with abnormal hypoxic adaptation (e.g., cancers, neurological disorders)[1][2].

In Vitro

iPAF1C (20 μM, 16 h) mimics the effect of PAF1 shRNA transduction, inducing global release of promoter-proximal paused RNA Pol II into gene bodies and increasing the pause-release ratio (PRR) of RNA Pol II in HCT116 cells[1].
iPAF1C (20 μM, 3 h) specifically enhances the thermostability of CTR9 (a subunit of PAF1C)[1].
iPAF1C (20 μM, 16 h) disrupts the interaction between PAF1 and CTR9 in DLD1 cells engineered with an auxin-inducible degron (AID) tag at the endogenous PAF1 locus[1].
iPAF1C (6.25-12.5 μM) increases the population of HIV-1 NL4.3 Nef-IRES-GFP infected primary human CD4+T cells in a dose-dependent manner[1].
iPAF1C (20 μM, 6 h) impairs PAF1 chromatin recruitment to hypoxia-responsive genes in both untreated pIAA7-tagged BRD4 DLD-1 cells and auxin-treated BRD4 C mutant-complemented DLD-1 cells under hypoxic conditions[2].
iPAF1C (20 μM, 6 h) impairs transcriptional elongation by RNAPII at hypoxia-responsive genes in pIAA7-tagged BRD4 DLD-1 cells under hypoxic conditions[2].

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

Molecular Weight

521.42

Formula

C27H26BrFN4O

CAS No.
Appearance

Solid

Color

White to off-white

SMILES

O=C(C1CCN(CC1)C2=NC3=C(N2CC4=CC(F)=CC=C4)C=CC=C3)NC5=CC=C(C(C)=C5)Br

Shipping

Room temperature in continental US; may vary elsewhere.

Storage
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 6 months
-20°C 1 month
Solvent & Solubility
In Vitro: 

DMSO : 50 mg/mL (95.89 mM; ultrasonic and warming and heat to 60°C; 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 1.9178 mL 9.5892 mL 19.1784 mL
5 mM 0.3836 mL 1.9178 mL 3.8357 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; -20°C, 1 month. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

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

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This equation is commonly abbreviated as: C1V1 = C2V2

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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    90% Corn Oil

    Solubility: ≥ 5 mg/mL (9.59 mM); Clear solution

    This protocol yields a clear solution of ≥ 5 mg/mL (saturation unknown). If the continuous dosing period exceeds half a month, please choose this protocol carefully.

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (50.0 mg/mL) to 900 μL Corn oil, and mix evenly.

In Vivo Dissolution Calculator
Please enter the basic information of animal experiments:

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Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
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Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
The co-solvents required include: DMSO, . All of co-solvents are available by MedChemExpress (MCE). , Tween 80. All of co-solvents are available by MedChemExpress (MCE).
Calculation results:
Working solution concentration: mg/mL
Method for preparing stock solution: mg drug dissolved in μL  DMSO (Stock solution concentration: mg/mL).
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).
Method for preparing in vivo working solution for animal experiments: Take μL DMSO stock solution, add μL . μL , mix evenly, next add μL Tween 80, mix evenly, then add μL Saline.
 If the continuous dosing period exceeds half a month, please choose this protocol carefully.
Please ensure that the stock solution in the first step is dissolved to a clear state, and add co-solvents in sequence. You can use ultrasonic heating (ultrasonic cleaner, recommended frequency 20-40 kHz), vortexing, etc. to assist dissolution.
Purity & Documentation
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; -20°C, 1 month. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
DMSO 1 mM 1.9178 mL 9.5892 mL 19.1784 mL 47.9460 mL
5 mM 0.3836 mL 1.9178 mL 3.8357 mL 9.5892 mL
10 mM 0.1918 mL 0.9589 mL 1.9178 mL 4.7946 mL
15 mM 0.1279 mL 0.6393 mL 1.2786 mL 3.1964 mL
20 mM 0.0959 mL 0.4795 mL 0.9589 mL 2.3973 mL
25 mM 0.0767 mL 0.3836 mL 0.7671 mL 1.9178 mL
30 mM 0.0639 mL 0.3196 mL 0.6393 mL 1.5982 mL
40 mM 0.0479 mL 0.2397 mL 0.4795 mL 1.1986 mL
50 mM 0.0384 mL 0.1918 mL 0.3836 mL 0.9589 mL
60 mM 0.0320 mL 0.1598 mL 0.3196 mL 0.7991 mL
80 mM 0.0240 mL 0.1199 mL 0.2397 mL 0.5993 mL
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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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Product Name:
iPAF1C
Cat. No.:
HY-160267
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