≥98% (HPLC)

3-Phenylene]bis(2-methyl-propiononitrile, ICI-D1033, a,a,a′,a′-Tetramethyl-5-(1H-1,2,4-triazol-1-ylmethyl)-1,3-benzenediacetonitrile, Arimidex, 2;2-[5-(1H-1;2;4-Triazol-1-ylmethyl)-1, ZD1033
Empirical Formula (Hill Notation):
CAS Number:
Molecular Weight:
Pricing and availability is not currently available.

Quality Level


≥98% (HPLC)




DMSO: 40 mg/mL



storage temp.

room temp



InChI key


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Anastrozole (aromatase inhibitor) has been used:
  • as a positive control in DNA fragmentation (ladder) assay
  • to investigate its effects along with extra virgin olive oil and its major fatty acid component (omega-9 OA) in estrogen receptor positive mammary adenocarcinoma cells
  • to study its effects on viability, cell proliferation and apoptosis in Glioblastoma multiforme model in vivo


10, 50 mg in glass bottle

Biochem/physiol Actions

Anastrozole, which contains a triazole functional group, reversibly binds to the cytochrome P-450 component of aromatase. Binding interferes with the catalytic properties of aromatase, which results in inhibition of estrogen synthesis.
The aromatase enzyme converts adrenal androgens to estrogen; this enzymatic activity is the primary source of estrogen production in postmenopausal women. One treatment for estrogen receptor-positive breast cancer in postmenopausal women is through inhibition of aromatase. Anastrozole is a nonsteroidal, benzyl-triazole derivative that inhibits aromatase through competitive inhibition and is used to treat estrogen receptor-positive breast cancer. This compound is considered a third-generation, Type II aromatase inhibitor because it is more selective and less effective (if at all) on other steroidal hormones than first and second generation inhibitors.

Features and Benefits

This compound was developed by AstraZeneca. To browse the list of other pharma-developed compounds and Approved Drugs/Drug Candidates, click here.
This compound is featured on the Nuclear Receptors (Steroids) page of the Handbook of Receptor Classification and Signal Transduction. To browse other handbook pages, click here.


Exclamation markHealth hazard

Signal Word


Hazard Statements


NONH for all modes of transport

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis
Certificate of Origin
Akanksha Mehta et al.
Fertility and sterility, 100(4), 970-974 (2013-07-09)
To evaluate surgical sperm retrieval rates in adolescents with Klinefelter syndrome and testosterone replacement therapy (TRT). Case series. Academic medical center. Ten patients with Klinefelter syndrome, aged 14-22 years, treated with testosterone replacement and aromatase inhibitor therapy for a period...
P Dubsky et al.
Annals of oncology : official journal of the European Society for Medical Oncology, 24(3), 640-647 (2012-10-05)
In early estrogen receptor (ER)-positive/HER2-negative breast cancer, the decision to administer chemotherapy is largely based on prognostic criteria. The combined molecular/clinical EndoPredict test (EPclin) has been validated to accurately assess prognosis in this population. In this study, the clinical relevance...
Yanyan Hong et al.
Steroids, 76(8), 802-806 (2011-03-23)
Aromatase is the rate-limiting enzyme in estrogen biosynthesis. As a cytochrome P450, it utilizes electrons from NADPH-cytochrome P450 reductase (CPR) to produce estrogen from androgen. Estrogen is a key factor in the promotion of hormone-dependent breast cancer growth. Aromatase inhibitors...
Novel acylated steroidal glycosides from Caralluma tuberculata induce caspase-dependent apoptosis in cancer cells
Waheed A, et al.
Journal of Ethnopharmacology, 137(3), 1189-1196 (2011)
F Boccardo et al.
European journal of cancer (Oxford, England : 1990), 49(7), 1546-1554 (2013-02-19)
The Italian Tamoxifen Anastrozole (ITA) trial investigated the efficacy of switching to anastrozole for women who were already on adjuvant tamoxifen since 2-3years. Relapse-free survival (RFS) was the primary end-point; event-free survival (EFS), overall survival (OS) and safety were secondary...

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