CAS No. 120511-73-1

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

Chemical Information

IUPAC Name 2-[3-(2-cyanopropan-2-yl)-5-(1,2,4-triazol-1-ylmethyl)phenyl]-2-methylpropanenitrile
CAS Number 120511-73-1
Molecular Formula

C17H19N5

Molecular Weight (MW) 293.37
SMILES CC(C)(C#N)C1=CC(=CC(=C1)CN2C=NC=N2)C(C)(C)C#N
InChIKey YBBLVLTVTVSKRW-UHFFFAOYSA-N

Ordering Information

Biological Activity

Anastrozole is a nonsteroidal, third-generation selective aromatase inhibitor. By competitively binding to the heme group of the aromatase enzyme, it blocks the conversion of adrenal androgens to estrogens in peripheral tissues. This potent suppression of estrogen biosynthesis reduces circulating estrogen levels, thereby inhibiting estrogen receptor-mediated signaling pathways, cell proliferation, and growth in hormone-sensitive breast cancer models. [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 59 mg/mL (201.11 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Ethanol 59 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.