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MedKoo CAT#: 206628

CAS#: 77599-17-8

Description: Panomifene, also known as GYKI-13504 and EGIS-5650, is an antioestrogen agent and a tamoxifen (TMX) analog.

Price and Availability

Size Price Shipping out time Quantity
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Pricing updated 2020-07-10. Prices are subject to change without notice.

Panomifene is not in stock, but may be available through custom synthesis. For cost-effective reason, minimum 1 gram order is requested. The product will be characterized by NMR, HPLC and MS analysis. Purity (HPLC) is usually >98%. CoA, QC data, MSDS will be provided when product is successfully made. The estimated lead time is 2-3 months. Please send email to to inquire quote.

Chemical Structure


Theoretical Analysis

MedKoo Cat#: 206628
Name: Panomifene
CAS#: 77599-17-8
Chemical Formula: C25H24F3NO2
Exact Mass: 427.1759
Molecular Weight: 427.4672
Elemental Analysis: C, 70.25; H, 5.66; F, 13.33; N, 3.28; O, 7.49

Synonym: GYKI-13504; GYKI 13504; GYKI13504; EGIS-5650; EGIS5650; EGIS 5650; PAN; Panomifene

IUPAC/Chemical Name: (E)-2-((2-(4-(3,3,3-trifluoro-1,2-diphenylprop-1-en-1-yl)phenoxy)ethyl)amino)ethan-1-ol


InChi Code: InChI=1S/C25H24F3NO2/c26-25(27,28)24(21-9-5-2-6-10-21)23(19-7-3-1-4-8-19)20-11-13-22(14-12-20)31-18-16-29-15-17-30/h1-14,29-30H,15-18H2/b24-23+


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, not in water

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: Konno T, Daitoh T, Noiri A, Chae J, Ishihara T, Yamanaka H. A highly regio- and stereoselective carbocupration of fluoroalkylated internal alkynes: a short total synthesis of the antiestrogenic drug panomifene. Org Lett. 2004 Mar 18;6(6):933-6. PubMed PMID: 15012068.

2: Liu X, Shimizu M, Hiyama T. A facile stereocontrolled approach to CF3-substituted triarylethenes: synthesis of panomifene. Angew Chem Int Ed Engl. 2004 Feb 6;43(7):879-82. PubMed PMID: 14767964.

3: Monostory K, Jemnitz K, Vereczkey L, Czira G. Species differences in metabolism of panomifene, an analogue of tamoxifen. Drug Metab Dispos. 1997 Dec;25(12):1370-8. PubMed PMID: 9394026.

4: Erdélyi-Tóth V, Gyergyay F, Számel I, Pap E, Kralovánszky J, Bojti E, Csörgo M, Drabant S, Klebovich I. Pharmacokinetics of panomifene in healthy volunteers at phase I/a study. Anticancer Drugs. 1997 Jul;8(6):603-9. PubMed PMID: 9300575.

5: Borvendég J, Hermann I, Csuka O. Antiestrogens, antiandrogens. Acta Physiol Hung. 1996;84(4):405-6. PubMed PMID: 9328614.

6: Számel I, Budai B, Gyergyay F, Erdélyi-Tóth V, Kralovánsky J, Drabant S, Csörgö M, Zsarnóczay P. [Endocrine effect of a new anti-estrogen compound (EGIS-5650, panomifene) in healthy volunteers: phase I/a study]. Orv Hetil. 1994 May 15;135(20):1077-81. Hungarian. PubMed PMID: 7519764.

7: Erdélyi-Tóth V, Pap E, Kralovánszky J, Bojti E, Klebovich I. Determination of panomifene in human plasma by high-performance liquid chromatography. J Chromatogr A. 1994 May 13;668(2):419-25. PubMed PMID: 8032491.

8: Borvendég J, Anheuer Z. Influence of GYKI-13504, a new antioestrogen, on the responsiveness of isolated uterus removed from oestradiol pretreated rats to PGF2 alpha. Exp Clin Endocrinol. 1985 Dec;86(3):368-70. PubMed PMID: 3867510.