We are open as normal during COVID-19 pandemic. Order online, same day shipping out from North Carolina, USA

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

MedKoo CAT#: 584567

CAS#: 52-76-6

Description: Lynestrenol is a synthetic progestational hormone used often in mixtures with estrogens as an oral contraceptive.

Price and Availability

Size Price Shipping out time Quantity
1g USD 300 2 Weeks
Inquire bulk and customized quantity

Pricing updated 2020-10-26. Prices are subject to change without notice.

Lynestrenol, 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#: 584567
Name: Lynestrenol
CAS#: 52-76-6
Chemical Formula: C20H28O
Exact Mass: 284.214
Molecular Weight: 284.443
Elemental Analysis: C, 84.45; H, 9.92; O, 5.62

Synonym: Lynestrenol; HSDB 7899; IND 1006

IUPAC/Chemical Name: 19 Norpregn-4-en-20-yn-17-ol, (17alpha)-


InChi Code: InChI=1S/C20H28O/c1-3-20(21)13-11-18-17-9-8-14-6-4-5-7-15(14)16(17)10-12-19(18,20)2/h1,6,15-18,21H,4-5,7-13H2,2H3/t15-,16+,17+,18-,19-,20+/m0/s1

SMILES Code: C#C[C@@]1(O)CC[C@@]2([H])[C@]3([H])CCC4=CCCC[C@]4([H])[C@@]3([H])CC[C@]12C

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:
>3 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: Uzan S, Denis C, Pomi V, Varin C. Double-blind trial of promegestone (R 5020) and lynestrenol in the treatment of benign breast disease. Eur J Obstet Gynecol Reprod Biol. 1992 Feb 28;43(3):219-27. PubMed PMID: 1563574.

2: Verspyck E, Marpeau L, Lucas C. Leuprorelin depot 3.75 mg versus lynestrenol in the preoperative treatment of symptomatic uterine myomas: a multicentre randomised trial. Eur J Obstet Gynecol Reprod Biol. 2000 Mar;89(1):7-13. PubMed PMID: 10733017.

3: Huovinen KJ, Lähteenmäki P, Kärkkäinen J, Tikkanen MJ. Lynestrenol induced therapeutic amenorrhea: effects of dose reduction on serum sex-hormones and lipids. Acta Obstet Gynecol Scand. 1992 Apr;71(3):175-80. PubMed PMID: 1317638.

4: Huovinen K, Tikkanen MJ, Varonen S, Wilska ML, Westermarck T, Vesterinen H. The effect of peroral lynestrenol on serum lipids and lipoproteins in therapeutic amenorrhea of mentally retarded women. Acta Obstet Gynecol Scand. 1990;69(1):35-40. PubMed PMID: 2346078.

5: Pyörälä T, Vähäpassi J, Huhtala M. The effect of lynestrenol and norethindrone on the carbohydrate and lipid metabolism in subjects with gestational diabetes. Ann Chir Gynaecol. 1979;68(2):69-74. PubMed PMID: 507743.

6: Huovinen K, Tikkanen MJ, Autio S, Härkönen T, Lommi L, Varonen S, Wilska ML. Serum lipids and lipoproteins during therapeutic amenorrhea induced by lynestrenol and depot-medroxyprogesterone acetate. Acta Obstet Gynecol Scand. 1991;70(4-5):349-54. PubMed PMID: 1836088.

7: Korhonen T, Turpeinen M, Tolonen A, Laine K, Pelkonen O. Identification of the human cytochrome P450 enzymes involved in the in vitro biotransformation of lynestrenol and norethindrone. J Steroid Biochem Mol Biol. 2008 May;110(1-2):56-66. doi: 10.1016/j.jsbmb.2007.09.025. Epub 2008 Feb 15. PubMed PMID: 18356043.

8: Coert A, Geelen J, van der Vies J. Metabolites of lynestrenol acetate in the bile of rats after intravenous administration; a comparison with lynestrenol. Acta Endocrinol (Copenh). 1975 Apr;78(4):791-800. PubMed PMID: 1173966.

9: Falcão A, Vaz-da-Silva M, Gama H, Nunes T, Almeida L, Soares-da-Silva P. Effect of eslicarbazepine acetate on the pharmacokinetics of a combined ethinylestradiol/levonorgestrel oral contraceptive in healthy women. Epilepsy Res. 2013 Aug;105(3):368-76. doi: 10.1016/j.eplepsyres.2013.02.020. Epub 2013 Apr 6. PubMed PMID: 23570863.

10: Regidor PA, Regidor M, Schmidt M, Ruwe B, Lübben G, Förtig P, Kienle E, Schindler AE. Prospective randomized study comparing the GnRH-agonist leuprorelin acetate and the gestagen lynestrenol in the treatment of severe endometriosis. Gynecol Endocrinol. 2001 Jun;15(3):202-9. PubMed PMID: 11447732.

11: Odlind V, Weiner E, Victor A, Johansson ED. Effects on sex hormone binding globulin of different oral contraceptives containing norethisterone and lynestrenol. Br J Obstet Gynaecol. 1980 May;87(5):416-21. PubMed PMID: 6155933.

12: Bloch B. Lynestrenol as a contraceptive preparation. Experience with a micro-dosage formulation. S Afr Med J. 1975 Apr 12;49(16):657-61. PubMed PMID: 1135704.

13: Yasuda J, Fujii M, Tsukamoto K, Yamamoto T, Honjo H, Okada H. [Pharmacokinetics of norethindrone and lynestrenol studied by HPLC (author's transl)]. Nihon Naibunpi Gakkai Zasshi. 1981 Aug 20;57(8):1159-66. Japanese. PubMed PMID: 7319102.

14: Sannes E, Nafstad I. Tissue distribution of 14C-lynestrenol in pregnant rats. Acta Pharmacol Toxicol (Copenh). 1980 Jan;46(1):47-50. PubMed PMID: 7361560.

15: Lindberg M, Foldemo A, Josefsson A, Wiréhn AB. Differences in prescription rates and odds ratios of antidepressant drugs in relation to individual hormonal contraceptives: a nationwide population-based study with age-specific analyses. Eur J Contracept Reprod Health Care. 2012 Apr;17(2):106-18. doi: 10.3109/13625187.2012.658925. Epub 2012 Mar 4. PubMed PMID: 22385398.

16: Richter K. )Significance of lynestrenol (Orgametril)-induced amenorrhea in the therapy of endometriosis externa. Wien Klin Wochenschr. 1968 May 31;80(22):432-5. German. PubMed PMID: 5701105.

17: Hem AL, Sannes E, Nafstad I, Nicolaissen B. Effects of oral lynestrenol administration on prenatal and postnatal progeny development in rabbits. NIPH Ann. 1984 Dec;7(2):41-5. PubMed PMID: 6531137.

18: Lejeune B, Wilkin P. [Histological changes observed in the treatment of endometrial glandular epithelioma with lynestrenol]. J Gynecol Obstet Biol Reprod (Paris). 1977 Dec;6(8):1159-69. French. PubMed PMID: 608932.

19: Sannes E, Lyngset A, Nafstad I. Teratogenicity and embryotoxicity of orally administered lynestrenol in rabbits. Arch Toxicol. 1983 Jan;52(1):23-33. PubMed PMID: 6838375.

20: Siddique YH, Afzal M. In vivo induction of sister chromatid exchanges (SCEs) and chromosomal aberrations (CAs) by lynestrenol. Indian J Exp Biol. 2005 Mar;43(3):291-3. PubMed PMID: 15816420.