CAS No. 803712-79-0

Batch: Purity:99.85
Obatoclax Mesylate (GX15-070) Chemical Structure
Chemical Structure
Check the Obatoclax Mesylate (GX15-070) product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name (2Z)-2-[(5Z)-5-[(3,5-dimethyl-1H-pyrrol-2-yl)methylidene]-4-methoxypyrrol-2-ylidene]indole;methanesulfonic acid
CAS Number 803712-79-0
Molecular Formula

C20H19N3O.CH4O3S

Molecular Weight (MW) 413.49
SMILES CC1=CC(=C(N1)C=C2C(=CC(=C3C=C4C=CC=CC4=N3)N2)OC)C.CS(=O)(=O)O
InChIKey ZVAGBRFUYHSUHA-LZOXOEDVSA-N

Ordering Information

Biological Activity

Obatoclax Mesylate (GX15-070) is a small-molecule antagonist of the Bcl-2 family of anti-apoptotic proteins. By antagonizing anti-apoptotic Bcl-2 members such as Bcl-2 and Mcl-1, it prevents their interaction with pro-apoptotic proteins, promoting mitochondrial outer membrane permeabilization and the release of apoptogenic factors. This activation of mitochondrial apoptotic signaling pathways induces dose-dependent apoptosis and overcomes Mcl-1-mediated resistance in cancer cells. [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
DMSO 83 mg/mL (200.73 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Water Insoluble
Ethanol Insoluble
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).

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Note: Technical data last updated: Sep 1, 2026.