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SML2368

Sigma-Aldrich

(Z)-Endoxifen

≥98% (HPLC)

Synonym(s):

4-Hydroxy-N-desmethyl-tamoxifen, Endoxifen, Metabolite BX, N-Desmethyl-4-hydroxytamoxifen, Z-Endoxifen

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About This Item

Empirical Formula (Hill Notation):
C25H27NO2
CAS Number:
112093-28-4
Molecular Weight:
373.49
MDL number:
MFCD09840374
UNSPSC Code:
12352200
NACRES:
NA.77

Assay

≥98% (HPLC)

form

powder

color

white to beige

solubility

DMSO: 2 mg/mL, clear

storage temp.

2-8°C

Application

(Z)-Endoxifen has been used to demonstrate the lack of contribution of subventricular zone and leptomeningeal cells in a study determining the generation of neuroblasts from astrocytes.

Biochem/physiol Actions

(Z)-Endoxifen (endoxifen) is an active tamoxifen metabolite generated via actions of cytochrome P450 (CYP) enzymes CYP3A4/5 and CYP2D6. Endoxifen is more potent than tamoxifen as a selective estrogen receptor modulator (SERM) both in vitro and in vivo with good pharmacokinetics and oral availability (∼80% MCF-7 tumor growth inhibition with 4-8 mg/kg/day endoxifen or 20 mg/kg/day tamoxifen in mice via p.o.). Endoxifen also exhibits 4-fold higher PKC inhibitory potency than tamoxifen and can overcome tamoxifen resistance due to cytochrome CYP2D6 polymorphism.

Pictograms

Health hazardEnvironment
GHS08,GHS09

Signal Word

Danger

Hazard Statements

H350,H360,H410

Hazard Classifications

Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 1A - 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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Phyllis Elkins et al.
Journal of pharmaceutical and biomedical analysis, 88, 174-179 (2013-09-24)
(Z)-Endoxifen (4-hydroxy-N-desmethyltamoxifen), an active metabolite generated via actions of CYP3A4/5 and CYP2D6, is a more potent selective estrogen receptor modulator (SERM) than tamoxifen. In the MCF-7 human mammary tumor xenograft model with female athymic mice, (Z)-endoxifen, at an oral dose
Shagufta et al.
European journal of medicinal chemistry, 143, 515-531 (2017-12-06)
Tamoxifen (ICI 46 474), trans-1-(4-β-dimethylaminoethoxyphenyl)-1,2-diphenylbut-1-ene, is the most commonly used drug for the treatment of estrogen receptor positive breast cancer and has been saving lives worldwide for the past four decades. Tamoxifen is considered a pioneering drug due to its ubiquitous
E A Lien et al.
Cancer research, 48(8), 2304-2308 (1988-04-15)
The occurrence of tamoxifen metabolites in bile was investigated in a 57-year-old female patient receiving chronic treatment with tamoxifen. In bile treated with beta-glucuronidase, two major peaks were detected using a chromatographic system developed for the quantitation of tamoxifen metabolites
Janina Johänning et al.
Archives of toxicology, 92(3), 1099-1112 (2017-12-30)
Tamoxifen, a standard therapy for breast cancer, is metabolized to compounds with anti-estrogenic as well as estrogen-like action at the estrogen receptor. Little is known about the formation of estrogen-like metabolites and their biological impact. Thus, we characterized the estrogen-like
Ateeq Ahmad et al.
Breast cancer research and treatment, 122(2), 579-584 (2010-01-07)
Endoxifen is the key active metabolite of tamoxifen, a widely used breast cancer drug. Orally administered tamoxifen, is extensively metabolized by cytochrome P450 (CYP) enzymes, namely CYP3A4 and CYP2D6, into active metabolites, especially endoxifen. Due to genetic polymorphism of CYP2D6
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