CAS No. 50-78-2

Batch: Purity:99.99
Aspirin Chemical Structure
Chemical Structure
Check the Aspirin product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name 2-acetyloxybenzoic acid
CAS Number 50-78-2
Molecular Formula

C9H8O4

Molecular Weight (MW) 180.16
SMILES CC(=O)OC1=CC=CC=C1C(=O)O
InChIKey BSYNRYMUTXBXSQ-UHFFFAOYSA-N

Ordering Information

Biological Activity

Aspirin is a salicylate derivative that functions as an irreversible inhibitor of cyclooxygenase-1 (COX-1) and cyclooxygenase-2 (COX-2). By blocking COX enzymes, aspirin suppresses downstream prostaglandin synthesis, thereby dampening inflammatory cascades and pain signaling pathways. Furthermore, aspirin promotes cellular autophagy and stimulates mitophagy, which contributes to the modulation of stress responses and homeostasis. [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 36 mg/mL (199.82 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Ethanol 36 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.