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Y0000685

Letrozole

European Pharmacopoeia (EP) Reference Standard

Sinonimo/i:

4,4′-(1H-1,2,4-Triazol-1-ylmethylene)bisbenzonitrile

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About This Item

Formula empirica (notazione di Hill):
C17H11N5
Numero CAS:
Peso molecolare:
285.30
Numero MDL:
Codice UNSPSC:
41116107
ID PubChem:
NACRES:
NA.24

Grado

pharmaceutical primary standard

Famiglia di API

letrozole

Produttore/marchio commerciale

EDQM

applicazioni

pharmaceutical (small molecule)

Formato

neat

Temperatura di conservazione

2-8°C

Stringa SMILE

N#CC(C=C1)=CC=C1C(N2C=NC=N2)C3=CC=C(C#N)C=C3

InChI

1S/C17H11N5/c18-9-13-1-5-15(6-2-13)17(22-12-20-11-21-22)16-7-3-14(10-19)4-8-16/h1-8,11-12,17H
HPJKCIUCZWXJDR-UHFFFAOYSA-N

Informazioni sul gene

human ... CYP19A1(1588)

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Descrizione generale

This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets have been developed and issued under the Authority of the Issuing Pharmacopoeia. For further information and support please go to the website of the issuing Pharmacopoeia.

Applicazioni

Letrozole EP Reference standard, intended for use in laboratory tests only as specifically prescribed in the European Pharmacopoeia.

Azioni biochim/fisiol

Letrozole is a third generation nonsteroidal aromatase inhibitor. It is a competitive inhibitor of the aromatase enzyme system and thus inhibits the conversion of androgens to estrogens. Letrozole inhibits the aromatase enzyme by competitively binding to the heme of the cytochrome P450 subunit of the enzyme, resulting in a reduction of estrogen biosynthesis in all tissues.

Confezionamento

The product is delivered as supplied by the issuing Pharmacopoeia. For the current unit quantity, please visit the EDQM reference substance catalogue.

Altre note

Sales restrictions may apply.

Pittogrammi

Health hazard

Avvertenze

Warning

Indicazioni di pericolo

Classi di pericolo

Repr. 2 - STOT RE 2

Codice della classe di stoccaggio

11 - Combustible Solids

Classe di pericolosità dell'acqua (WGK)

WGK 3

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable


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G Allevi et al.
British journal of cancer, 108(8), 1587-1592 (2013-04-13)
The objective of this study was to determine the optimal scheduling of 2.5 mg daily letrozole in neoadjuvant breast cancer patients to obtain pathological complete response (pathCR) and assess Ki-67 expression as an early predictor of response. This single institution
Pamela J Goodwin et al.
Journal of clinical oncology : official journal of the American Society of Clinical Oncology, 32(21), 2231-2239 (2014-06-18)
Obesity is associated with poor outcomes in women with operable breast cancer. Lifestyle interventions (LIs) that help women reduce their weight may improve outcomes. We conducted a multicenter randomized trial comparing mail-based delivery of general health information alone or combined
Antonio C Wolff et al.
Journal of clinical oncology : official journal of the American Society of Clinical Oncology, 31(2), 195-202 (2012-12-13)
Recent data showed improvement in progression-free survival (PFS) when adding everolimus to exemestane in patients with advanced breast cancer experiencing recurrence/progression after nonsteroidal aromatase inhibitor (AI) therapy. Here, we report clinical outcomes of combining the mammalian target of rapamycin (mTOR)
Valentina Guarneri et al.
Journal of clinical oncology : official journal of the American Society of Clinical Oncology, 32(10), 1050-1057 (2014-03-05)
This is a randomized, double-blind, placebo-controlled study aimed to evaluate the clinical and biologic effects of letrozole plus lapatinib or placebo as neoadjuvant therapy in hormone receptor (HR) -positive/human epidermal growth factor receptor 2 (HER2) -negative operable breast cancer. Ninety-two
Israel Ortega et al.
Fertility and sterility, 99(3), 889-896 (2012-12-04)
To evaluate the effects of letrozole on ovarian size and steroidogenesis in vivo, as well as on proliferation and steroidogenesis of theca-interstitial cells alone and in coculture with granulosa cells using an in vitro model. In vivo and in vitro studies. Research laboratory. Immature

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