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PZ0006

Sigma-Aldrich

Exemestane

≥98% (HPLC)

Synonym(s):

6-Methyleneandrosta-1,4-diene-3,17-dione

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About This Item

Empirical Formula (Hill Notation):
C20H24O2
CAS Number:
107868-30-4
Molecular Weight:
296.40
MDL number:
MFCD00866994
UNSPSC Code:
51111800
PubChem Substance ID:
329823675
NACRES:
NA.77

Assay

≥98% (HPLC)

form

powder

optical activity

[α]/D +250 to +300°, c = 1 in methanol

color

white to off-white

solubility

DMSO: ≥20 mg/mL

storage temp.

2-8°C

SMILES string

C[C@]12CC[C@H]3[C@@H](CC(=C)C4=CC(=O)C=C[C@]34C)[C@@H]1CCC2=O

InChI

1S/C20H24O2/c1-12-10-14-15-4-5-18(22)20(15,3)9-7-16(14)19(2)8-6-13(21)11-17(12)19/h6,8,11,14-16H,1,4-5,7,9-10H2,2-3H3/t14-,15-,16-,19+,20-/m0/s1

InChI key

BFYIZQONLCFLEV-DAELLWKTSA-N

Gene Information

human ... CYP19A1(1588)

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Biochem/physiol Actions

Exemestane is a steroidal antiestrogen and irreversible aromatase inhibitor. Exemestane acts as a false substrate for the aromatase enzyme. Exemestane also prevents the conversion of androgens to estrogens and is used to treat estrogen-dependent breast cancer.

Features and Benefits

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.

Pictograms

Health hazardEnvironment
GHS08,GHS09

Signal Word

Danger

Hazard Statements

H360,H411

Hazard Classifications

Aquatic Chronic 2 - Repr. 1B

Storage Class Code

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Elizabeth Maunsell et al.
Journal of clinical oncology : official journal of the American Society of Clinical Oncology, 32(14), 1427-1436 (2014-04-09)
Exemestane, a steroidal aromatase inhibitor, reduced invasive breast cancer incidence by 65% among 4,560 postmenopausal women randomly assigned to exemestane (25 mg per day) compared with placebo in the National Cancer Institute of Canada (NCIC) Clinical Trials Group MAP.3 (Mammary
John M S Bartlett et al.
Journal of clinical oncology : official journal of the American Society of Clinical Oncology, 30(36), 4477-4484 (2012-10-10)
Some postmenopausal patients with hormone-sensitive early breast cancer remain at high risk of relapse despite endocrine therapy and, in addition, might benefit from adjuvant chemotherapy. The challenge is to prospectively identify such patients. The Mammostrat test uses five immunohistochemical markers
John Fr Robertson et al.
The Lancet. Oncology, 14(3), 228-235 (2013-02-19)
Insulin-like growth factors (IGF-1 and IGF-2) bind to the IGF-1 receptor (IGF-1R), increasing cell proliferation and survival. Ganitumab is a monoclonal IgG1 antibody that blocks IGF-1R. We tested the efficacy and safety of adding ganitumab to endocrine treatment for patients
Nan Soon Wong et al.
Expert opinion on pharmacotherapy, 6(13), 2353-2363 (2005-10-13)
Breast cancer is a major health problem in developed countries. Endocrine therapy is a key component in the management of hormone receptor-positive disease. Although tamoxifen has historically been the gold standard in the first-line management of early and advanced breast
Willemien van de Water et al.
European journal of cancer (Oxford, England : 1990), 49(2), 297-304 (2012-09-08)
Multiple studies suggest better efficacy of chemotherapy in invasive ductal breast carcinomas (IDC) than invasive lobular breast carcinomas (ILC). However, data on efficacy of adjuvant endocrine therapy regimens and histological subtypes are sparse. This study assessed endocrine therapy efficacy in
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