2. Epigenetics
  3. Histone Methyltransferase
  4. A-196

A-196 is a potent and selective inhibitor of SUV420H1 and SUV420H2 with IC50 values of 25 nM and 144 nM, respectively. A-196 inhibits SUV4-20 biochemically in a substrate-competitive manner. A-196 represents a first-in-class chemical probe of SUV4-20 to investigate the role of histone methyltransferases in genomic integrity.

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A-196 Chemical Structure

A-196 Chemical Structure

CAS No. : 1982372-88-2

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10 mM * 1 mL in DMSO
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Customer Review

Based on 4 publication(s) in Google Scholar

A-196 Related Antibodies

Top Publications Citing Use of Products

View All Histone Methyltransferase Isoform Specific Products:

View All Isoforms
EZH1 EZH2 DOT1L SMYD2 SMYD3 SUV39H2/KMT1B EHMT2/G9a/KMT1C EHMT1/GLP/KMT1D SETDB1/KMT2G SETD2/KMT3A SETD7/KMT7 SETD8/KMT5A PRMT1 PRMT3 PRMT4 PRMT5 PRMT6 PRMT7 PRMT8

  • Biological Activity

  • Purity & Documentation

  • References

  • Customer Review

Description

A-196 is a potent and selective inhibitor of SUV420H1 and SUV420H2 with IC50 values of 25 nM and 144 nM, respectively. A-196 inhibits SUV4-20 biochemically in a substrate-competitive manner. A-196 represents a first-in-class chemical probe of SUV4-20 to investigate the role of histone methyltransferases in genomic integrity[1].

IC50 & Target

IC50: 25 nM (SUV420H1) and 144 nM (SUV420H2)[1].
In Vitro

A-196 (0-5 μM; 48 hours; U2OS cells) treatment results in an increase in H4K20me1 (EC50 value of 735 nM) and a decrease in both H4K20me2 and H4K20me3 (EC50 values of 262 and 370 nM, respectively)[1].
A-196 (10 μM; 72 hours; Wild-type, Suv4-20h double knockout and inhibitortreated mouse embryonic fibroblast cells) inhibits both SUV4-20 enzymes in cells in multiple tissue types without overt toxicity[1].

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

A-196 Related Antibodies

Western Blot Analysis[1]

Cell Line: U2OS cells
Concentration: 0 μM, 0.075 μM, 0.15 μM, 0.3 μM, 0.6 μM, 1.25 μM, 2.5 μM, 5 μM
Incubation Time: 48 hours
Result: Increased in H4K20me1 and decreased in both H4K20me2 and H4K20me3.
Molecular Weight

359.25

Formula

C18H16Cl2N4
CAS No.
Appearance

Solid

Color

Light brown to brown

SMILES

ClC1=C(Cl)C=C(C(C2=CC=NC=C2)=NN=C3NC4CCCC4)C3=C1
Shipping

Room temperature in continental US; may vary elsewhere.
Storage
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 2 years
-20°C 1 year
Solvent & Solubility
In Vitro: 

DMSO : 12.5 mg/mL (34.79 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

H2O : < 0.1 mg/mL (insoluble)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.7836 mL 13.9179 mL 27.8358 mL
5 mM 0.5567 mL 2.7836 mL 5.5672 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, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

  • Molarity Calculator

  • Dilution Calculator

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

Mass
=
Concentration
×
Volume
×
Molecular Weight *

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

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

C1

×
Volume (start)

V1

=
Concentration (final)

C2

×
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: ≥ 1 mg/mL (2.78 mM); Clear solution

    This protocol yields a clear solution of ≥ 1 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (10.0 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% (20% SBE-β-CD in Saline)

    Solubility: 1 mg/mL (2.78 mM); Suspended solution; Need ultrasonic

    This protocol yields a suspended solution of 1 mg/mL. Suspended solution can be used for oral and intraperitoneal injection.

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (10.0 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.
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).
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

Purity: 99.73%

COA (252 KB) LCMS (136 KB)

Handling Instructions (2659 KB)
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, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
DMSO 1 mM 2.7836 mL 13.9179 mL 27.8358 mL 69.5894 mL
5 mM 0.5567 mL 2.7836 mL 5.5672 mL 13.9179 mL
10 mM 0.2784 mL 1.3918 mL 2.7836 mL 6.9589 mL
15 mM 0.1856 mL 0.9279 mL 1.8557 mL 4.6393 mL
20 mM 0.1392 mL 0.6959 mL 1.3918 mL 3.4795 mL
25 mM 0.1113 mL 0.5567 mL 1.1134 mL 2.7836 mL
30 mM 0.0928 mL 0.4639 mL 0.9279 mL 2.3196 mL
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A-196 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:

A-1961982372-88-2A196A 196Histone MethyltransferaseInhibitorinhibitorinhibit

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