CAS No. 67605-85-0

Batch: Purity:99.89
N-Butanoyl-L-homoserine lactone Chemical Structure
Chemical Structure
Check the N-Butanoyl-L-homoserine lactone product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

CAS Number 67605-85-0
Molecular Formula

C8H13NO3

Molecular Weight (MW) 171.19
SMILES CCCC(=O)NC1CCOC1=O

Ordering Information

Biological Activity

N-Butanoyl-L-homoserine lactone (C4-HSL) is a small diffusible signaling molecule and quorum-sensing autoinducer that targets transcriptional regulators such as RhlR. By mediating population density-dependent quorum-sensing pathways, C4-HSL controls gene expression to regulate cellular metabolism, biofilm formation, and virulence factor synthesis in bacterial systems. Furthermore, C4-HSL serves as a cleavable linker in the synthesis of antibody-drug conjugates.

How to Prepare Stock Solution?

Concentration Volume Mass
🧮 Molarity Calculator

Solubility

Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
Solvent Solubility & Note
DMSO 34 mg/mL (198.6 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Water 34 mg/mL
Ethanol 34 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.