My cart
In the shopping cart is not goods, to choose and buy!
  • Product Name
  • Size
  • Quantity
  • Amount
    Selected items : 0 pieces Total : CHECK OUT()
    ML346 (CID-767276)
    ML346 (CID-767276)

    Market Price:

    This product is for research use only, not for human use. We do not sell to patients.
    Number: - + Pieces(InventoryPieces)
    InvivoChem Cat #: V0090
    CAS #: 100872-83-1 Purity ≥98%

    Description: ML346 (CID767276) is a novel and potent activator of heat shock protein 70 (Hsp70) (EC50 = 4600 nM in HeLa cell toxicity assay). ML346 belongs to the barbituric acid class of compounds that induce HSF-1-dependent chaperone expression and restores protein folding in conformational disease models.  


    Customer Validation
    Official Supplier of
    • VE
    • OF
    • YALE
    • hhmi
    • 香港大学
    Publications Citing InvivoChem Products
    • Physicochemical and Storage Information
    • Protocol
    • Quality Control Documentation
    • Related Biological Data
    • Customer Review
    Molecular Weight (MW) 272.26
    Formula C14H12N2O4 
    CAS No. 100872-83-1
    Storage-20℃ for 3 years in powder form
    -80℃ for 2 years in solvent
    Solubility (In vitro)DMSO: > 10mM
    Water: N/A
    Ethanol: N/A
    Chemical Name (E)-5-(3-(4-methoxyphenyl)allylidene)pyrimidine-2,4,6(1H,3H,5H)-trione
    Synonyms ML-346; ML 346; ML346; CID-767276; CID767276; CID 767276
    SMILES Code O=C(NC(NC/1=O)=O)C1=C\C=C\C2=CC=C(OC)C=C2

    • Molarity Calculator
    • Dilution Calculator
    • The molarity calculator equation

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

      • Mass
      • Concentration
      • Volume
      • Molecular Weight *
      • =
      • ×
      • ×
    • The dilution calculator equation

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

      This equation is commonly abbreviated as: C1V1 = C2V2

      • Concentration (start)
      • ×
      • Volume (start)
      • =
      • Concentration (final)
      • ×
      • Volume (final)
      • ×
      • =
      • ×
      • C1
      • V1
      • C2
      • V2
    In Vitro

    In vitro activity: ML346 is a novel activator of Hsp70, with EC50 of 4600 nM in HeLa cells. ML346 at 10 μM restores proteostasis, restores CFTR-mediated iodide conductance, and enhances the correct folding of proteins expressed in two different cellular compartments. ML346 (Compound F1) induces multiple responses and strongly induces Hsp70, the oxidative stress response genes (HO1 and GCLM), and a 2.5-fold upregulation of BiP in WT MEF cells. ML346 (0.5-25 μM) exhibits cytoprotective effects in cells after a 35 min severe heat shock, and also causes a two-fold protection from H2O2-induced apoptosis.

    Kinase Assay: HeLa cells are incubated with either DMSO as negative control, or the positive controls MG132 (10 μM) and lactacystin (6 μM) or the PRs A1, A3 and ML346 (F1) for 3 and 6 hours and then harvested. Cells are lysed in homogenization buffer (50 mM Tris-HCl, pH7.5, 250 mM sucrose, 5 mM MgCl2, 2 mM ATP, 1 mM DTT, 0.5 mM EDTA, 0.025% digitonin) for 5 min on ice, and total protein concentration of whole cell extract is determined. 3 μg of whole cell extracts are combined with assay buffer (50 mM Tris-HCl, pH 7.5, 40 mM KCl, 5 mM MgCl2, 0.5 mM ATP, 1 mM DTT, 0.05 mg/mL BSA) in a black 96-well plate and the reaction is initiated by the addition of a 2× (200 μM) fluorogenic peptide substrate Suc-LLVY-AMC. Fluorescence is measured every 10 min using a Synergy H4 multi-mode microplate reader.

    Cell Assay: HeLa cells are plated in black 96-well plates (10,000 cells per well) in 100 μL of DMEM supplemented with 10% FBS and 1% Pen/Strep/Neo. Plates are incubated for 16 hours at 37°C, 5% CO2 and 95% relative humidity before compound addition. 1 μL of hit compounds (ML346) in DMSO or DMSO alone are added to the sample or control wells, respectively. Plates are then placed back in the incubator for 24 hours. After incubation, cells are washed 2× with 200 μL of PBS and 200 μL of a solution of 1 μg/mL of calcein AM is added to each well. Cells are then incubated for 45 min at 37°C, 5% CO2 before fluorescence measurement using an Analyst GT multimode reader. Percent cytotoxicity is expressed relative to wells containing cells treated with DMSO only (100%).  

    In Vivo
    Animal model
    Formulation & Dosage
    References  2011 Dec 25;8(2):185-96.

    These protocols are for reference only. InvivoChem does not independently validate these methods.


    Probe ML346 is not toxic to HeLa cells. Probe Reports from the NIH Molecular Libraries Program


    Probe ML346 (“F1”) induces Hsp70 mRNA expression. Probe Reports from the NIH Molecular Libraries Program


    Probe ML346 (“F1”) induces chaperone protein expression. Probe Reports from the NIH Molecular Libraries Program


    a, Wild type (hsf-1+/+) and b, HSF-1 null (hsf-1−/−) (MEFs) were treated for 4 h with probe ML346 (compound F1) at the indicated concentrations.


    Probe ML346 restores proteostasis.


    Probe ML346 (compound F1) reduces aggregation/toxicity in C. elegansmodels of diseases associated with polyQ expansions. Probe Reports from the NIH Molecular Libraries Program


      Home Prev Next Last page / pices


      Your information is safe with us. * Required Fields.
      Products are for research use only;  We do not sell to patients
      Tel: 1-708-310-1919
      Fax: 1-708-557-7486
      Subscribe to our E-newsletter
      • Name*
      • *
      • E-mail*
      • *
      • instructions:
      • *
      Copyright 2020 InvivoChem LLC | All Rights Reserved
      Do you confirm the receipt?