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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:
Molecular Weight:
373.49
MDL number:
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

Signal Word

Danger

Hazard Statements

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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Vered Stearns et al.
Journal of the National Cancer Institute, 95(23), 1758-1764 (2003-12-05)
Tamoxifen, a selective estrogen receptor modulator (SERM), is converted to 4-hydroxy-tamoxifen and other active metabolites by cytochrome P450 (CYP) enzymes. Selective serotonin reuptake inhibitors (SSRIs), which are often prescribed to alleviate tamoxifen-associated hot flashes, can inhibit CYPs. In a prospective
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
Matthew P Goetz et al.
Journal of clinical oncology : official journal of the American Society of Clinical Oncology, 35(30), 3391-3400 (2017-08-31)
Purpose Endoxifen is a tamoxifen metabolite with potent antiestrogenic activity. Patients and Methods We performed a phase I study of oral Z-endoxifen to determine its toxicities, maximum tolerated dose (MTD), pharmacokinetics, and clinical activity. Eligibility included endocrine-refractory, estrogen receptor-positive metastatic
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

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