Letrozole
Tocris Bioscience, part of Bio-Techne | Catalog # 4382
Potent, reversible non-steroidal aromatase inhibitor
Key Product Details
Description
Potent, reversible non-steroidal aromatase inhibitor
Alternative Names
CGS 20267
Product Description
Letrozole is a potent, reversible non-steroidal aromatase inhibitor (IC50 = 11.5 nM). Displays antitumor effects in several animal models. Suppresses the endogenous aromatase-induced proliferation of MCF-7 cells.Product Specifications
Molecular Weight
285.30
Formula
C17H11N5
Storage
Store at +4°C
Purity
≥98% (HPLC)
Chemical Name
4,4'-(1H-1,2,4-Triazol-1-ylmethylene)bisbenzonitrile
CAS Number
112809-51-5
PubChem ID
3902
InChI Key
HPJKCIUCZWXJDR-UHFFFAOYSA-N
SMILES
N#CC(C=C2)=CC=C2C(N3N=CN=C3)C1=CC=C(C#N)C=C1
The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.
Solubility
| Solvent | Max Conc. mg/mL | Max Conc. mM | |
|---|---|---|---|
| Solubility | |||
| DMSO | 28.53 | 100 |
Preparing Stock Solutions
for Letrozole
The following data is based on the product molecular weight 285.30
Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which all affect the solvent volumes required to prepare stock solutions.
| Concentration / Solvent Volume / Mass | 1 mg | 5 mg | 10 mg |
|---|---|---|---|
| 1 mM | 3.51 mL | 17.53 mL | 35.05 mL |
| 5 mM | 0.70 mL | 3.51 mL | 7.01 mL |
| 10 mM | 0.35 mL | 1.75 mL | 3.51 mL |
| 50 mM | 0.07 mL | 0.35 mL | 0.70 mL |
Calculators
Molarity Calculator
Dilution Calculator
Reconstitution Calculator
Background References
References are publications that support the biological activity of the product.
- Bhatnagar Highly selective inhbition of estrogen biosynthesis by CGS 20267, a new non-steroidal aromatase inhibitor. J.Steroid Biochem.Mol.Biol. 1990 PMID: 2149502
- Bhatnagar The discovery and mechanism of action of letr. Breast Cancer Res.Treat. 2007 PMID: 17912633
- Mitropoulou Letrozole as a potent inhibitor of cell proliferation and expression of metalloproteinases (MMP-2 and MMP-9) by human epithelial breast cancer cells. Int.J.Cancer 2003 PMID: 12569569
Product Specific Notices for Letrozole
For research use only
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