CAS No. 897016-82-9

Batch: Purity:99.95
Tirbanibulin Chemical Structure
Chemical Structure
Check the Tirbanibulin product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name N-benzyl-2-[5-[4-(2-morpholin-4-ylethoxy)phenyl]-2-pyridinyl]acetamide
CAS Number 897016-82-9
Molecular Formula

C26H29N3O3

Molecular Weight (MW) 431.53
SMILES C1COCCN1CCOC2=CC=C(C=C2)C3=CN=C(C=C3)CC(=O)NCC4=CC=CC=C4
InChIKey HUNGUWOZPQBXGX-UHFFFAOYSA-N

Ordering Information

Biological Activity

Tirbanibulin (KX2-391) is a synthetic, peptidomimetic Src inhibitor that targets the peptide substrate-binding site of Src kinase and inhibits microtubule polymerization. By dual-targeting Src tyrosine kinase signaling and microtubule dynamics, tirbanibulin suppresses downstream tumor cell proliferation, cell cycle progression, and cell migration, leading to the inhibition of primary tumor growth and suppression of metastasis in preclinical 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
DMSO 86 mg/mL (199.29 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.