Endoxifen E-isomer HCl

    WARNING: This product is for research use only, not for human or veterinary use.

MedKoo CAT#: 555212

CAS#: 1197194-61-8 (HCl)

Description: Endoxifen E-isomer is a tamoxifen metabolite and potent Selective Estrogen Response Modifier (SERM).

Price and Availability

Size Price Shipping out time Quantity
100mg USD 950 2 weeks
200mg USD 1450 2 weeks
500mg USD 2150 2 weeks
1g USD 3250 2 weeks
2g USD 5450 2 weeks
5g USD 7450 2 weeks
Inquire bulk and customized quantity

Pricing updated 2021-01-19. Prices are subject to change without notice.

Endoxifen E-isomer HCl, purity > 98%, is in stock. Current shipping out time is about 2 weeks after order is received. CoA, QC data and MSDS documents are available in one week after order is received.

Chemical Structure


Theoretical Analysis

MedKoo Cat#: 555212
Name: Endoxifen E-isomer HCl
CAS#: 1197194-61-8 (HCl)
Chemical Formula: C25H28ClNO2
Exact Mass:
Molecular Weight: 409.954
Elemental Analysis: C, 73.25; H, 6.88; Cl, 8.65; N, 3.42; O, 7.81

Related CAS #: 114828-90-9 (free base)   1197194-61-8 (HCl)    

Synonym: Endoxifen E-isomer HCl;

IUPAC/Chemical Name: 4-[(E)-1-[4-[2-(methylamino)ethoxy]phenyl]-2-phenylbut-1-enyl]phenol;hydrochloride


InChi Code: InChI=1S/C25H27NO2.ClH/c1-3-24(19-7-5-4-6-8-19)25(20-9-13-22(27)14-10-20)21-11-15-23(16-12-21)28-18-17-26-2;/h4-16,26-27H,3,17-18H2,1-2H3;1H/b25-24+;


Technical Data

Solid powder

>98% (or refer to the Certificate of Analysis)

Shipping Condition:
Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition:
Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Soluble in DMSO

Shelf Life:
>2 years if stored properly

Drug Formulation:
This drug may be formulated in DMSO

Stock Solution Storage:
0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code:


1: Ford BM, Franks LN, Radominska-Pandya A, Prather PL. Tamoxifen Isomers and
Metabolites Exhibit Distinct Affinity and Activity at Cannabinoid Receptors:
Potential Scaffold for Drug Development. PLoS One. 2016 Dec 9;11(12):e0167240.
doi: 10.1371/journal.pone.0167240. eCollection 2016. PubMed PMID: 27936172;
PubMed Central PMCID: PMC5147891.

2: Elkins P, Coleman D, Burgess J, Gardner M, Hines J, Scott B, Kroenke M, Larson
J, Lightner M, Turner G, White J, Liu P. Characterization of the
isomeric configuration and impurities of (Z)-endoxifen by 2D NMR, high resolution
LC⬜MS, and quantitative HPLC analysis. J Pharm Biomed Anal. 2014 Jan;88:174-9.
doi: 10.1016/j.jpba.2013.07.010. Epub 2013 Jul 24. PubMed PMID: 24055701; PubMed
Central PMCID: PMC4057282.

3: Fauq AH, Maharvi GM, Sinha D. A convenient synthesis of
(Z)-4-hydroxy-N-desmethyltamoxifen (endoxifen). Bioorg Med Chem Lett. 2010 May
15;20(10):3036-8. doi: 10.1016/j.bmcl.2010.03.117. Epub 2010 Apr 3. PubMed PMID: