CAS No. 71310-21-9

Batch: Purity:99
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11-Mercaptoundecanoic acid Chemical Structure
Chemical Structure
Check the 11-Mercaptoundecanoic acid product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

CAS Number 71310-21-9
Molecular Formula

C11H22O2S
Molecular Weight (MW) 218.36
SMILES OC(=O)CCCCCCCCCCS

Ordering Information

Biological Activity

11-Mercaptoundecanoic acid is a thiol-terminated fatty acid functionalizing agent utilized in the preparation of self-assembled monolayers and metal-associated nanoparticles. Carboxyl-terminal activation of these monolayers facilitates efficient biomolecule conjugation for electrochemical biosensing platforms. Furthermore, 11-mercaptoundecanoic acid-coated gold nanoclusters display minimal cytotoxicity and undergo cellular internalization to distribute within the cytoplasm of cancer cells, supporting their utility as biocompatible bioimaging probes.[1][2]

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 44 mg/mL (201.5 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Ethanol 44 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.