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Key Documents

SML0719

Sigma-Aldrich

Enclomiphene hydrochloride

≥96% (HPLC)

Synonym(s):

(E)-Clomiphene hydrochloride, 2-[4-[(1E)-2-Chloro-1,2-diphenylethenyl]phenoxy]-N,N-diethyl-ethanamine hydrochloride, 2-[p-(2-Chloro-trans-1,2-diphenylvinyl)phenoxy]triethylamine hydrochloride, ICI 46476, trans-Clomifene hydrochloride, trans-Clomiphene hydrochloride

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About This Item

Empirical Formula (Hill Notation):
C26H28ClNO · HCl
CAS Number:
Molecular Weight:
442.42
UNSPSC Code:
51111800
NACRES:
NA.77

Assay

≥96% (HPLC)

form

powder

storage condition

protect from light

color

white to beige

solubility

H2O: 10 mg/mL, clear

storage temp.

2-8°C

InChI

1S/C26H28ClNO.ClH/c1-3-28(4-2)19-20-29-24-17-15-22(16-18-24)25(21-11-7-5-8-12-21)26(27)23-13-9-6-10-14-23;/h5-18H,3-4,19-20H2,1-2H3;1H/b26-25+;

InChI key

KKBZGZWPJGOGJF-BTKVJIOYSA-N

Biochem/physiol Actions

Enclomiphene is a non-steroidal estrogen receptor antagonist that promotes gonadotropin-dependent testosterone secretion by the testes. Enclomiphene is the trans-isomer of clomiphene, which is about a 60-40 mix of trans (Enclomiphene) and cis (Zuclomiphene). While enclomiphene (trans-clomiphene) is an estrogen antagonist, zuclomiphene (cis-clomiphene) is a mixed agonist, responsible for the estrogenic activity and therefore the common side effects sometimes seen in males. The enclomiphene isomer is responsible for the anti-estrogen activity and the restoration of ones hypothalamic–pituitary–gonadal axis. In recent clinical trials, enclomiphene increased serum LH and FSH with concomitant increases in testosterone in men with secondary hypogonadism. Enclomiphene showed overall better results than testosterone gels, which raise serum testosterone but can lower LH and FSH at the same time.

Other Notes

Light sensitive

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

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Albert Asante et al.
Fertility and sterility, 100(6), 1610-1614 (2013-10-01)
To determine whether there is a correlation between preovulatory endometrial stripe thickness (EST) and pregnancy rates in clomiphene citrate (CC)/IUI cycles. Retrospective cohort. Infertility clinic of an academic medical center. A total of 262 patients completed 562 transvaginal ultrasound-monitored CC/IUI
Marleen J Nahuis et al.
BMC women's health, 13, 42-42 (2013-10-29)
Clomiphene citrate (CC) is first line treatment in women with World Health Organization (WHO) type II anovulation and polycystic ovary syndrome (PCOS). Whereas 60% to 85% of these women will ovulate on CC, only about one half will have conceived
A Ayaz et al.
Journal of medicine and life, 6(2), 199-201 (2013-08-02)
Polycystic ovary syndrome (PCOS) is the most common endocrinopathy in women and is associated with the reproductive and metabolic disorders. To compare the ovulation and conception rates after the treatment with Clomiphene Citrate (CC) alone and in combination with metformin
Fertility and sterility, 100(2), 341-348 (2013-07-03)
This committee opinion describes the use of clomiphene citrate, including indications, use, monitoring, and side effects. There is also a discussion of adjuvants and alternatives to clomiphene citrate therapy.
Akmal El-Mazny et al.
Gynecological endocrinology : the official journal of the International Society of Gynecological Endocrinology, 29(9), 826-829 (2013-07-17)
To evaluate the ability of a combination of multiple ovarian reserve markers to predict ovarian stimulation response in polycystic ovary syndrome (PCOS). On cycle Day 3 of 75 infertile patients with PCOS, serum follicle stimulating hormone (FSH), luteinizing hormone (LH)

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