CAS No. 244240-24-2

Batch: Purity:99.98
LFM-A13 Chemical Structure
Chemical Structure
Check the LFM-A13 product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name (Z)-2-cyano-N-(2,5-dibromophenyl)-3-hydroxybut-2-enamide
CAS Number 244240-24-2
Molecular Formula
C11H8Br2N2O2
 
Molecular Weight (MW) 360
SMILES CC(=C(C#N)C(=O)NC1=C(C=CC(=C1)Br)Br)O
InChIKey UVSVTDVJQAJIFG-VURMDHGXSA-N

Ordering Information

Biological Activity

LFM-A13 is a specific Bruton's tyrosine kinase (BTK) inhibitor with an IC50 of 2.5 μM. It exhibits greater than 100-fold selectivity for BTK over other protein kinases, including JAK1, JAK2, HCK, EGFR, and IRK. By inhibiting BTK activity, LFM-A13 disrupts B-cell receptor signaling pathways, preventing downstream activation and inducing apoptosis in leukemic cell lines. [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 72 mg/mL (200.0 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.