Chaetocin

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Chaetocin
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Cat #: V3456 CAS #: 28097-03-2 Purity ≥ 98%

Description: Chaetocin, a naturally occurring fungal mycotoxin extracted from Chaetomium, is a novel and non-specific inhibitor of the histone lysine methyltransferase (HMT) G9a with an IC50 of 2.5 μM. It belongs to the class of 3,6-epidithio-diketopiperazines.

References: Greiner D, et al. Identification of a specific inhibitor of the histone methyltransferase SU(VAR)3-9. Nat Chem Biol. 2005 Aug;1(3):143-5.

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Molecular Weight (MW)696.84
Molecular FormulaC30H28N6O6S4
CAS No.28097-03-2
Storage-20℃ for 3 years in powder formr
-80℃ for 2 years in solvent
SMILES CodeO=C1N(C)[C@]2(CO)C(N3C1(SS2)C[C@@]4([H])[C@]3([H])NC5=C4C(N6C(N7[C@](C(N(C)[C@]8(CO)C7=O)=O)(SS8)C9)C9C%10=C6C=CC=C%10)=CC=C5)=O
SynonymsChaetocin
ProtocolIn VitroChaetocin is initially isolated from the fermentation broth of chaetomium minutum and belongs to the class of 3-6 epidithio-diketopiperazines (ETPs). The IC50 for SU(VAR)3-9 is 0.6 μM and acts as a competitive inhibitor for S-adenosylmethionine. Chaetocin inhibits the human ortholog of dSU(VAR)3-9 with a similar IC50 value of 0.8 μM. It inhibits other known Lys9-specific HMTs such as mouse G9a and Neurospora crassa DIM5 with a higher IC50 values of 2.5 and 3 mM, respectively.
In VivoSL-2 Drosophila tissue cells are cultured in the presence or absence of the inhibitor. Chaetocin has a toxic effect on cells grown in culture. Toxicity is highly dependent on the initial cell density when chaetocin is added to the culture. The number of H3 molecules dimethylated at Lys9 (H3K9me2) is markedly reduced when cells are grown in medium containing 0.5 μM chaetocin after 5 d. Histones isolated from cells treated with 0.1 μM and for a shorter time also shows a drop in Lys9 methylation, but not as strongly as with the higher concentration.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Preparing Stock Solutions
Solvent volume to be added Mass (the weight of a compound)
Mother liquor concentration 1mg5mg10mg20mg
1mM1.4350 mL7.1752 mL14.3505 mL28.7010 mL
5mM0.2870 mL1.4350 mL2.8701 mL5.7402 mL
10mM0.1435 mL0.7175 mL1.4350 mL2.8701 mL
20mM0.0718 mL0.3588 mL0.7175 mL1.4350 mL
Quality Control Documentation
The molarity calculator equation
Mass(g) = Concentration(mol/L) × Volume(L) × Molecular Weight(g/mol)
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Volume
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The dilution calculator equation
Concentration(start) × Volume(start) = Concentration(final) × Volume(final)

This equation is commonly abbreviated as: C1 V1 = C2 V2

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Step One: Enter information below
Dosage mg/kg Average weight of animals g Dosing volume per animal µL Number of animals
Step Two: Enter the in vivo formulation
%DMSO + % + %Tween 80 + %ddH2O

Calculation Results:
Working concentration: mg/ml;
Method for preparing DMSO master liquid: mg drug pre-dissolved in µL DMSO(Master liquid 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 master liquid, next add µL PEG300, mix and clarify, next add µL Tween 80,mix and clarify, next add µL ddH2O,mix and clarify.
Note:
  • (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.