CAS No. 147366-41-4

Batch: Purity:99.81
MKT-077 Chemical Structure
Chemical Structure
Check the MKT-077 product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name (2Z,5E)-3-ethyl-2-[(1-ethylpyridin-1-ium-2-yl)methylidene]-5-(3-methyl-1,3-benzothiazol-2-ylidene)-1,3-thiazolidin-4-one chloride
CAS Number 147366-41-4
Molecular Formula

C21H22ClN3OS2

Molecular Weight (MW) 432
SMILES CCN1C(=CC2=CC=CC=[N+]2CC)SC(=C3N(C4=CC=CC=C4S3)C)C1=O.[Cl-]
InChIKey VSKYOTRJSLYFHX-UXJRWBAGSA-M

Ordering Information

Biological Activity

MKT-077 is a water-soluble rhodacyanine dye that acts as an inhibitor of heat shock cognate 70 (Hsc70) and heat shock protein 70 (Hsp70) family chaperones. By selectively accumulating in the mitochondria of carcinoma cells, MKT-077 disrupts mitochondrial membrane potential and chaperone-mediated protein folding, leading to cell cycle arrest, inhibition of tumor cell proliferation, and induction of apoptosis across various cancer models. [1]

How to Prepare Stock Solution?

Concentration Volume Mass
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Solubility

Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
Solvent Solubility & Note
Water 86 mg/mL
DMSO 13 mg/mL (30.09 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Ethanol 10 mg/mL
FAQ
Q: Why does a DMSO stock precipitate in media/saline?
A: It is caused by unheated aqueous media (supersaturation), local solvent shock, or incorrect mixing sequence.
How to fix it?
  • Preheat media/saline to 37°C.
  • Mix rapidly (pipette/vortex) upon addition.
  • For complex mixes, always add the aqueous phase last.
  • Re-dissolve minor precipitates with a 37°C water bath and sonication (≤30 min).
Note: Technical data last updated: Sep 1, 2026.