Nestoron

醋酸烯诺孕酮

Also known as: Nestorone, Segesterone acetate, Elcometrine, ST-1435, 16-Methylene-17-hydroxy-19-norpregn-4-ene-3,20-dione acetate, 17-(Acetyloxy)-16-methylene-19-norpregn-4-ene-3,20-dione, 16-Methylene-17α-acetoxy-19-nor-4-pregnene-3,20-dione

Nestoron (CAS 7759-35-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C23H30O4 and a molecular weight of 370.48200 g/mol. It is also known as Nestorone, Segesterone acetate and Elcometrine. Key properties include a boiling point of 499.3ºC at 760mmHg, a density of 1.15g/cm3 and a flash point of 216.2ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 7759-35-5
Jingsj CID: J-1984265-5
Molecular Formula: C₂₃H₃₀O₄
Chinese Name: 醋酸烯诺孕酮
Molecular Weight: 370.48200 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	499.3ºC at 760mmHg
Density	1.15g/cm3
Flash Point	216.2ºC
Exact Mass	370.21400
PSA	60.44000
LogP	4.18520
Refractive Index	1.549
Storage Conditions	2-8℃

Activity & Biological Data

Additional Information	[1]. Ilani N, et al. A New Combination of Testosterone and Nestorone Transdermal Gels for Male Hormonal Contraception.J Clin Endocrinol Metab. 2012 Jul 12. [2]. Rad M, et al. Discriminant analysis of the metabolic effects of a new combined contraceptive vaginal ring containing Nestorone/EE vs. a second-generation oral contraceptive containing levonorgestrel/EE.Contraception. 2012 Sep;86(3):231-7. Epub 2012 Mar 23 [3]. Hussain R, et al. Progesterone and Nestorone facilitate axon remyelination: a role for progesterone receptors.Endocrinology. 2011 Oct;152(10):3820-31. Epub 2011 Aug 9. [4]. Prasad PV, et al. Single-dose pharmacokinetics of Nestorone, a potential female-contraceptive.Steroids. 2010 Mar;75(3):252-64. Epub 2010 Jan 11. [5]. Elsimar M Coutinho et al. Use of a single implant of elcometrine (ST-1435), a nonorally active progestin, as a long acting contraceptive for postpartum nursing women Contraception Volume 59, Issue 2, February 1999, Pages 115-122

Additional Information

[1]. Ilani N, et al. A New Combination of Testosterone and Nestorone Transdermal Gels for Male Hormonal Contraception.J Clin Endocrinol Metab. 2012 Jul 12. [2]. Rad M, et al. Discriminant analysis of the metabolic effects of a new combined contraceptive vaginal ring containing Nestorone/EE vs. a second-generation oral contraceptive containing levonorgestrel/EE.Contraception. 2012 Sep;86(3):231-7. Epub 2012 Mar 23 [3]. Hussain R, et al. Progesterone and Nestorone facilitate axon remyelination: a role for progesterone receptors.Endocrinology. 2011 Oct;152(10):3820-31. Epub 2011 Aug 9. [4]. Prasad PV, et al. Single-dose pharmacokinetics of Nestorone, a potential female-contraceptive.Steroids. 2010 Mar;75(3):252-64. Epub 2010 Jan 11. [5]. Elsimar M Coutinho et al. Use of a single implant of elcometrine (ST-1435), a nonorally active progestin, as a long acting contraceptive for postpartum nursing women Contraception Volume 59, Issue 2, February 1999, Pages 115-122

Frequently Asked Questions

What is the CAS number of Nestoron?

The CAS number of Nestoron is 7759-35-5.

What are the molecular formula and molecular weight of Nestoron?

Nestoron has molecular formula C23H30O4 and molecular weight 370.48200 g/mol.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "Nestoron (CAS 7759-35-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1984265-5 (accessed 2026-10-29).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.