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SPEN-IN-1 (compound X1) is an inhibitor of SPEN which is a protein factor with a Kd value of 47 nM. SPEN-IN-1 has high selectivity for RepA, a 431-nucleotide domain in Xist (a non-coding RNA prototype) that comprises 8.5 units of a GC-rich motif responsible for gene silencing.

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SPEN-IN-1 Chemical Structure

SPEN-IN-1 Chemical Structure

CAS No. : 2863686-82-0

Size Price Stock Quantity
Solid + Solvent
10 mM * 1 mL in DMSO
ready for reconstitution
 USD 330 In-stock
Solution
10 mM * 1 mL in DMSO USD 330 In-stock
Solid
5 mg USD 300 In-stock
10 mg USD 480 In-stock
25 mg USD 950 In-stock
50 mg USD 1450 In-stock
100 mg USD 2250 In-stock
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Based on 1 publication(s) in Google Scholar

SPEN-IN-1 Related Antibodies

Top Publications Citing Use of Products

  • Biological Activity

  • Purity & Documentation

  • References

  • Customer Review

Description

SPEN-IN-1 (compound X1) is an inhibitor of SPEN which is a protein factor with a Kd value of 47 nM. SPEN-IN-1 has high selectivity for RepA, a 431-nucleotide domain in Xist (a non-coding RNA prototype) that comprises 8.5 units of a GC-rich motif responsible for gene silencing[1].

In Vitro

SPEN-IN-1 (0-100 μM) inhibits RepA-PRC2 and RepA-SPEN interactions with IC50 values of 30 and 48 µM, respectively[1].
SPEN-IN-1 inhibits RepA, PRC2 and SPEN with Kd values of 400, 47 and 420 nM, respecctively[1].
SPEN-IN-1 selectively disrupts the interactions of Xist with cognate proteins in vitro and inside cells[1].
SPEN-IN-1 strongly inhibits H3K27me3 and PRC2 accumulation[1].

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

SPEN-IN-1 Related Antibodies
In Vivo

SPEN-IN-1 reduces RepA-SPEN interaction in vivo[1].

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

416.47

Formula

C27H20N4O
CAS No.
Appearance

Solid

Color

White to off-white

SMILES

C1(C2=NC3=CC=CC=C3N2)=NNC4=C1C=C(C5=CC=CC(OCC6=CC=CC=C6)=C5)C=C4
Shipping

Room temperature in continental US; may vary elsewhere.
Storage

4°C, sealed storage, away from moisture and light

*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light)

Solvent & Solubility
In Vitro: 

DMSO : 66.67 mg/mL (160.08 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 2.4011 mL 12.0057 mL 24.0113 mL
5 mM 0.4802 mL 2.4011 mL 4.8023 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 (sealed storage, away from moisture and light). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

  • Molarity Calculator

  • Dilution Calculator

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

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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

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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: ≥ 2.5 mg/mL (6.00 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 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% Corn Oil

    Solubility: ≥ 2.5 mg/mL (6.00 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.5 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 (25.0 mg/mL) to 900 μL Corn oil, and mix evenly.

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.
Please enter your animal formula composition:
%
DMSO +
% 
+
%
Tween-80 +
%
Saline
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).

*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light)

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 (sealed storage, away from moisture and light). 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 2.4011 mL 12.0057 mL 24.0113 mL 60.0283 mL
5 mM 0.4802 mL 2.4011 mL 4.8023 mL 12.0057 mL
10 mM 0.2401 mL 1.2006 mL 2.4011 mL 6.0028 mL
15 mM 0.1601 mL 0.8004 mL 1.6008 mL 4.0019 mL
20 mM 0.1201 mL 0.6003 mL 1.2006 mL 3.0014 mL
25 mM 0.0960 mL 0.4802 mL 0.9605 mL 2.4011 mL
30 mM 0.0800 mL 0.4002 mL 0.8004 mL 2.0009 mL
40 mM 0.0600 mL 0.3001 mL 0.6003 mL 1.5007 mL
50 mM 0.0480 mL 0.2401 mL 0.4802 mL 1.2006 mL
60 mM 0.0400 mL 0.2001 mL 0.4002 mL 1.0005 mL
80 mM 0.0300 mL 0.1501 mL 0.3001 mL 0.7504 mL
100 mM 0.0240 mL 0.1201 mL 0.2401 mL 0.6003 mL
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SPEN-IN-1 Related Classifications

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.

Keywords:

SPEN-IN-12863686-82-0Othersprotein factorRepAXistGC-richPRC2H3K27me3Inhibitorinhibitorinhibit

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