Exemestane
Biological Activity
Irreversible steroidal aromatase inhibitor (IC50 = 20 nM). Destabilizes aromatase and lowers estrogen levels; orally active.
Licensing Information
Sold for research purposes under agreement from Pfizer Inc.
Compound Libraries
Exemestane is also offered as part of the Tocriscreen Plus and Tocriscreen Library of FDA-Approved Compounds. Find out more about compound libraries available from Tocris.
Technical Data
| M. Wt | 296.4 |
| Formula | C20H24O2 |
| Storage | Store at -20°C |
| Purity | ≥99% (HPLC) |
| CAS Number | 107868-30-4 |
| PubChem ID | 60198 |
| InChI Key | BFYIZQONLCFLEV-DAELLWKTSA-N |
| Smiles | C[C@@]12C(C(C[C@]3([H])[C@@]([H])2CC[C@@]4(C)[C@]([H])3CCC4=O)=C)=CC(C=C1)=O |
The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.
Tocris products are intended for laboratory research use only, unless stated otherwise.
Solubility Data
| Solvent | Max Conc. mg/mL | Max Conc. mM | |
|---|---|---|---|
| Solubility | |||
| DMSO | 29.64 | 100 | |
| ethanol | 22.23 | 75 |
Preparing Stock Solutions
The following data is based on the product molecular weight 296.4. Batch specific molecular weights may vary from batch to batch due to solvent of hydration, which will affect the solvent volumes required to prepare stock solutions.
| Concentration / Solvent Volume / Mass | 1 mg | 5 mg | 10 mg |
|---|---|---|---|
| 1 mM | 3.37 mL | 16.87 mL | 33.74 mL |
| 5 mM | 0.67 mL | 3.37 mL | 6.75 mL |
| 10 mM | 0.34 mL | 1.69 mL | 3.37 mL |
| 50 mM | 0.07 mL | 0.34 mL | 0.67 mL |
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Product Datasheets
References
References are publications that support the biological activity of the product.
Goss et al (2004) The steroidal aromatase inhibitor exemestane prevents bone loss in ovariectomized rats. Bone 34 384 PMID: 15003786
Wang and Chen (2006) Aromatase destabilizer: novel action of exemestane, a Food and Drug Administration-approved aromatase inhibitor. Cancer Res. 66 10281 PMID: 17079446
Miller et al (2008) Aromatase inhibitors: are there differences between steroidal and nonsteroidal aromatase inhibitors and do they matter? Oncologist 13 829 PMID: 18695261
di Salle et al (1992) Exemestane (FCE 24304), a new steroidal aromatase inhibitor. J.Steroid Biochem.Molec.Bio. 43 137
If you know of a relevant reference for Exemestane, please let us know.
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Keywords: Exemestane, Exemestane supplier, Pfizer, aromatase, inhibitors, inhibits, estrogen, synthesis, CYP19, Cytochrome, P450, FCE24304, FCE, 24304, EXE, 3759, Tocris Bioscience
Citations for Exemestane
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