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Estradiol dienantate

Clinical data
Trade names	Climacteron, Amenose, Lactimex, Lactostat (all combinations)
Other names	Estradiol dienantate; EDE; EDEn; E2-EDN; Estradiol diheptanoate; Estra-1,3,5(10)-triene-3,17β-diol 3,17β-diheptanoate
Routes of administration	Intramuscular injection
Drug class	Estrogen; Estrogen ester
Identifiers
IUPAC name phenanthren-17-yl] heptanoate
CAS Number	7732-97-0
PubChem CID	165688
DrugBank	DB13955
ChemSpider	145199
UNII	65C72P1860
CompTox Dashboard (EPA)	DTXSID401024596
ECHA InfoCard	100.028.903
Chemical and physical data
Formula	C32H48O4
Molar mass	496.732 g·mol
3D model (JSmol)	Interactive image
SMILES CCCCCCC(=O)O1CC21(CC32CCC4=C3C=CC(=C4)OC(=O)CCCCCC)C
InChI InChI=1S/C32H48O4/c1-4-6-8-10-12-30(33)35-24-15-17-25-23(22-24)14-16-27-26(25)20-21-32(3)28(27)18-19-29(32)36-31(34)13-11-9-7-5-2/h15,17,22,26-29H,4-14,16,18-21H2,1-3H3/t26-,27-,28+,29+,32+/m1/s1 Key:OVAHZPTYWMWNKO-CAHAWPIUSA-N

Estradiol dienanthate (EDE), sold under the brand names Climacteron among others, is a long-acting estrogen medication which was previously used in menopausal hormone therapy for women and to suppress lactation in women. It was formulated in combination with estradiol benzoate (EB), a short-acting estrogen, and testosterone enanthate benzilic acid hydrazone (TEBH), a long-acting androgen/anabolic steroid. EDE has not been made available for medical use alone. The medication, in combination with EB and TEBH, was given by injection into muscle once or at regular intervals, for instance once every 6 weeks.

Side effects of EDE include breast tenderness, breast enlargement, nausea, headache, and fluid retention. EDE is an estrogen and hence is an agonist of the estrogen receptor, the biological target of estrogens like estradiol. It is an estrogen ester and a prodrug of estradiol in the body. Because of this, it is considered to be a natural and bioidentical form of estrogen.

EDE was first described by 1959. It was previously available in Canada and Germany but was discontinued by 2005. The medication is no longer available in any form.

Medical uses

EDE, a long-acting estrogen, was used in combination with EB, a short-acting estrogen, and TEBH, a long-acting androgen/anabolic steroid, in menopausal hormone therapy in perimenopausal, postmenopausal, hypogonadal, and oophorectomized women, as well as for suppression of lactation in postpartum women.

Available forms

EDE was available only in combination EB and TEBH. The combination was available in two different dose forms, one for menopausal hormone therapy (brand names Climacteron, Amenose) and the other for lactation suppression (brand names Lactimex, Lactostat). Climacteron and Amenose contained 1.0 mg EB, 7.5 mg EDE, and 150 mg TEBH (69 mg free testosterone) and was given by repeated intramuscular injection at regular intervals. Lactimex and Lactostat contained 6 mg EB, 15 mg EDE, and 300 mg TEBH in 2 mL of corn oil and was administered as a single intramuscular injection after childbirth or during breastfeeding.

Pharmacology

Pharmacodynamics

EDE is an estradiol ester, or a prodrug of estradiol. As such, it is an estrogen, or an agonist of the estrogen receptors. EDE is of about 82% higher molecular weight than estradiol due to the presence of its C3 and C17β heptanoate (enanthate) esters. Because EDE is a prodrug of estradiol, it is considered to be a natural and bioidentical form of estrogen.

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• Estradiol and testosterone levels after an intramuscular injection of 1 mg estradiol benzoate, 7.5 mg estradiol dienanthate, and 150 mg testosterone enanthate benzilic acid hydrazone in oil (brand name Climacteron) in ovariectomized women. Assays were performed using immunoassays. Source was Sherwin (1987).
• Estradiol levels after an intramuscular injection of 10 mg estradiol valerate in oil or Climacteron (1 mg estradiol benzoate, 7.5 mg estradiol dienanthate in oil) in ovariectomized women. Assays were performed using RIA. Source was Sherwin et al. (1987).

Pharmacokinetics

Estradiol and testosterone levels following a single intramuscular injection of Climacteron (including 1 mg EB, 7.5 mg EDE, and 150 mg TEBH equivalent to 69 mg free testosterone) versus 10 mg estradiol valerate have been studied over 28 days.

Chemistry

EDE is a synthetic estrane steroid and the C3 and C17β heptanoate (enanthate) diester of estradiol. It is also known as estradiol 3,17β-heptanoate or as estra-1,3,5(10)-triene-3,17β-diol 3,17β-diheptanoate. EDE is structurally related to estradiol enanthate (estradiol 17β-heptanoate), which has a single heptanoate ester rather than two.

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Structural properties of selected estradiol esters

Estrogen	Structure	Ester(s)				Relative mol. weight	Relative E2 content	log P
		Position(s)	Moiet(ies)	Type	Length
Estradiol		–	–	–	–	1.00	1.00	4.0
Estradiol acetate		C3	Ethanoic acid	Straight-chain fatty acid	2	1.15	0.87	4.2
Estradiol benzoate		C3	Benzoic acid	Aromatic fatty acid	– (~4–5)	1.38	0.72	4.7
Estradiol dipropionate		C3, C17β	Propanoic acid (×2)	Straight-chain fatty acid	3 (×2)	1.41	0.71	4.9
Estradiol valerate		C17β	Pentanoic acid	Straight-chain fatty acid	5	1.31	0.76	5.6–6.3
Estradiol benzoate butyrate		C3, C17β	Benzoic acid, butyric acid	Mixed fatty acid	– (~6, 2)	1.64	0.61	6.3
Estradiol cypionate		C17β	Cyclopentylpropanoic acid	Cyclic fatty acid	– (~6)	1.46	0.69	6.9
Estradiol enanthate		C17β	Heptanoic acid	Straight-chain fatty acid	7	1.41	0.71	6.7–7.3
Estradiol dienanthate		C3, C17β	Heptanoic acid (×2)	Straight-chain fatty acid	7 (×2)	1.82	0.55	8.1–10.4
Estradiol undecylate		C17β	Undecanoic acid	Straight-chain fatty acid	11	1.62	0.62	9.2–9.8
Estradiol stearate		C17β	Octadecanoic acid	Straight-chain fatty acid	18	1.98	0.51	12.2–12.4
Estradiol distearate		C3, C17β	Octadecanoic acid (×2)	Straight-chain fatty acid	18 (×2)	2.96	0.34	20.2
Estradiol sulfate		C3	Sulfuric acid	Water-soluble conjugate	–	1.29	0.77	0.3–3.8
Estradiol glucuronide		C17β	Glucuronic acid	Water-soluble conjugate	–	1.65	0.61	2.1–2.7
Estramustine phosphate		C3, C17β	Normustine, phosphoric acid	Water-soluble conjugate	–	1.91	0.52	2.9–5.0
Polyestradiol phosphate		C3–C17β	Phosphoric acid	Water-soluble conjugate	–	1.23	0.81	2.9
Footnotes: = Length of ester in carbon atoms for straight-chain fatty acids or approximate length of ester in carbon atoms for aromatic or cyclic fatty acids. = Relative estradiol content by weight (i.e., relative estrogenic exposure). = Experimental or predicted octanol/water partition coefficient (i.e., lipophilicity/hydrophobicity). Retrieved from PubChem, ChemSpider, and DrugBank. = Also known as estradiol normustine phosphate. = Polymer of estradiol phosphate (~13 repeat units). = Relative molecular weight or estradiol content per repeat unit. = log P of repeat unit (i.e., estradiol phosphate). Sources: See individual articles.

History

EDE was first described and introduced for medical use by 1959.

Society and culture

Brand names

EDE was marketed in combination with EB and TEBH under the brand names Climacteron, Amenose, Lactimex, and Lactostat.

Availability

EDE is no longer available but was previously used in Canada, Germany and other countries.

See also

• Estradiol benzoate/estradiol dienanthate/testosterone enanthate benzilic acid hydrazone

References

1. ^ Elks J (14 November 2014). The Dictionary of Drugs: Chemical Data: Chemical Data, Structures and Bibliographies. Springer. p. 898. ISBN 978-1-4757-2085-3.
2. ^ Ginsburg ES (1999). "Androgen Replacement in Postmenopausal Women". In Seifer DB, Kennard EA (eds.). Menopause. Vol. 18. pp. 209–219. doi:10.1007/978-1-59259-246-3_13. ISBN 978-1-61737-129-5.
3. ^ Greenblatt RB, Barfield WE, Jungck EC (January 1962). "The treatment of the menopause". Canadian Medical Association Journal. 86 (3): 113–114. PMC 1848811. PMID 13901504.
4. ^ Leondires MP, Segars JH, Walsh BW (27 July 1999). "The Use of Antiestrogens in the Postmenopausal Woman". In Seifer DB, Kennard EA (eds.). Menopause: Endocrinology and Management. Springer Science & Business Media. pp. 183–. doi:10.1007/978-1-59259-246-3_12. ISBN 978-1-59259-246-3.
5. ^ "Estradiol: Uses, Dosage & Side Effects". Drugs.com.
6. ^ "Climacteron Drug Information, Professional". Drugs.com. Archived from the original on 2 June 2019. Retrieved 2 June 2019.
7. ^ Geburtshilfe und Frauenheilkunde: Ergebnisse der Forschung für die Praxis. Georg Thieme Verlag. 1969. p. 387,390. Of 1200 postpartum patients one quarter stopped breast feeding for a variety of reasons and received an injection of Lactimex (Protina: Benzil acid hydrazon-testosteron-oenanthat 300 mg, Oestradiol-di-oenanthat 15 mg and Oestradiol-benzoate 6 mg in 1.0 ml of oil). In 76% of cases one injection was sufficient and the remaining 24% required a second injection. A second injection was required rarer if the first injection had been longer after delivery. A higher dosage of Lactimex was not necessary in cases with a preceding medical induction with intraveinous Oxytocin (Orasthin). Mothers who had been treated postpartum with methylergobasin did not as often require a second injection. No localized or generalized adverse reaction to the drug was noticed.
8. ^ Bundesverband der Pharmazeutischen Industrie (Germany) (1974). Rote Liste: Verzeichnis pharmazeutischer Spezialpräparate. Editio Cantor. ISBN 9783871930133. 49035 В Amenose® Rp Ampullen Zus.: 1 Amp. 1 ml enth.: Benzilsäurehydrazid-N-testosteron-hydrazon-17-oenanthat 150 mg, Oestradiol-di-oenanthat 7.5 mg. Oestradiolbenzoat 1 mg in öl-Lösg. Ind.: Androgen-Oestrogen-Gemisch. Gegen Ausfallserscheinungen im Klimakterium und nach Ovarektomie. Osteoporose. Kontraind.: A 90, О 5 Dos.: Durchschnittl. alle 6 Wochen 1 Amp. im. 1 Amp. I ml 6.75 3 Amp 17.40 AP.: 10 Amp.
9. Ghosh AK (23 September 2010). Mayo Clinic Internal Medicine Board Review. OUP USA. pp. 222–. ISBN 978-0-19-975569-1.
10. ^ Kuhl H (August 2005). "Pharmacology of estrogens and progestogens: influence of different routes of administration". Climacteric. 8 (Suppl 1): 3–63. doi:10.1080/13697130500148875. PMID 16112947. S2CID 24616324.
11. ^ Oettel M, Schillinger E (6 December 2012). Estrogens and Antiestrogens II: Pharmacology and Clinical Application of Estrogens and Antiestrogen. Springer Science & Business Media. p. 261. ISBN 978-3-642-60107-1. Natural estrogens considered here include: Esters of 17β-estradiol, such as estradiol valerate, estradiol benzoate and estradiol cypionate. Esterification aims at either better absorption after oral administration or a sustained release from the depot after intramuscular administration. During absorption, the esters are cleaved by endogenous esterases and the pharmacologically active 17β-estradiol is released; therefore, the esters are considered as natural estrogens.
12. ^ Vademecum International. J. Morgan Jones Publications. 1959. pp. 121–122.
13. ^ Kelly MJ, Primrose T (December 1960). "Evaluation of a new preparation for the suppression of lactation". Canadian Medical Association Journal. 83 (24): 1240–1242. PMC 1938994. PMID 13752392.
14. Al-Imari L, Wolfman WL (September 2012). "The safety of testosterone therapy in women". Journal of Obstetrics and Gynaecology Canada. 34 (9): 859–865. doi:10.1016/S1701-2163(16)35385-3. PMID 22971455.
15. Lexchin, Joel (2010). "Drug safety and Health Canada". International Journal of Risk & Safety in Medicine. 22 (1): 41–53. doi:10.3233/JRS-2010-0490.
16. "Discontinuation of CLIMACTERON® Injection (estradiol dienanthate ⁄ estradiol benzoate and testosterone enanthate benzilic acid hydrazone injection in corn oil)" (PDF). Sandoz. Health Canada. 23 November 2005. Archived from the original (PDF) on 2013-01-11. Retrieved 2 June 2019.
17. ^ "MDX Pharmaceutical Knowledge". Merative US L.P.
18. Sherwin BB (1988). "Estrogen and/or androgen replacement therapy and cognitive functioning in surgically menopausal women". Psychoneuroendocrinology. 13 (4): 345–357. doi:10.1016/0306-4530(88)90060-1. PMID 3067252. S2CID 24695692.
19. Zentralblatt für Gynäkologie. J. A. Barth. 1971. The preparation Lactimex (300 mg 3-benzyl hydrazone-testosterone-17-enanthate + 15 mg estradiol-dienanthate + 6 mg estradiol benzoate in 2 ml corn oil) was injected.
20. Vorherr H (2 December 2012). The Breast: Morphology, Physiology, and Lactation. Elsevier Science. pp. 201–. ISBN 978-0-323-15726-1.
21. ^ Compendium of Pharmaceuticals and Specialties. Canadian Pharmaceutical Association. 1983. ISBN 978-0-919115-04-0. LACTOSTAT Each 2 mL of injectable solution contains testosteorne enanthate benzilic acid hydrazone 300 mg, estradiol dienanthate 15 mg, estradiol benzoate 6 mg, benzyl alcohol 7.5% as preservative, benzyl benzoate 0.75 mg, corn oil q.s. Available in 2 mL ampuls, boxes of 25.
22. ^ Sherwin, Barbara B.; Gelfand, Morrie M. (1987). "Individual differences in mood with menopausal replacement therapy: possible role of sex hormone-binding globulin". Journal of Psychosomatic Obstetrics & Gynecology. 6 (2): 121–131. doi:10.3109/01674828709016773. ISSN 0167-482X.
23. ^ Sherwin BB, Gelfand MM, Schucher R, Gabor J (February 1987). "Postmenopausal estrogen and androgen replacement and lipoprotein lipid concentrations". Am. J. Obstet. Gynecol. 156 (2): 414–9. doi:10.1016/0002-9378(87)90295-X. PMID 3826177.
24. ^ Sherwin BB (1988). "Affective changes with estrogen and androgen replacement therapy in surgically menopausal women". J Affect Disord. 14 (2): 177–87. doi:10.1016/0165-0327(88)90061-4. PMID 2966832.

• Abandoned drugs
• Enanthate esters
• Estradiol esters
• Synthetic estrogens