CAS No. 226929-39-1

Batch: Purity:100.0
LB42708 Chemical Structure
Chemical Structure
Check the LB42708 product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name [1-[[3-[(4-bromophenyl)methyl]imidazol-4-yl]methyl]-4-naphthalen-1-ylpyrrol-3-yl]-morpholin-4-ylmethanone
CAS Number 226929-39-1
Molecular Formula

C30H27BrN4O2

Molecular Weight (MW) 555.46
SMILES C1COCCN1C(=O)C2=CN(C=C2C3=CC=CC4=CC=CC=C43)CC5=CN=CN5CC6=CC=C(C=C6)Br
InChIKey GUUIRIMAQGOLHT-UHFFFAOYSA-N

Ordering Information

Biological Activity

LB42708 is an orally active farnesyltransferase inhibitor that selectively blocks the farnesylation of H-Ras, N-Ras, and K-Ras. By inhibiting farnesyltransferase, it prevents the post-translational prenylation and plasma membrane localization of Ras proteins. This inhibition suppresses downstream Ras/Raf/MEK/ERK and PI3K/AKT signaling pathways, resulting in the inhibition of cell proliferation and induction of apoptosis in Ras-dependent 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 100 mg/mL (180.03 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Ethanol 86 mg/mL
Water 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.