CAS No. 123-99-9

Batch: Purity:97
Azelaic acid Chemical Structure
Chemical Structure
Check the Azelaic acid product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

CAS Number 123-99-9
Molecular Formula

C9H16O4

Molecular Weight (MW) 188.22
SMILES C(CCCC(=O)O)CCCC(=O)O

Ordering Information

Biological Activity

Azelaic acid is a naturally occurring dicarboxylic acid with antibacterial, keratolytic, comedolytic, and antioxidant activities. It acts by inhibiting bacterial protein synthesis in organisms such as Cutibacterium acnes and modulating epidermal keratinization. Downstream, azelaic acid reduces the generation of reactive oxygen species (ROS) and suppresses inflammatory pathways, leading to reduced follicular hyperkeratosis and bacterial colonization in inflammatory skin disorders. [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 37 mg/mL (196.57 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Ethanol 37 mg/mL
Water 4 mg/mL (超声加热十分钟)
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.