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Norethynodrel

Also known as: Norethinodrel, Noretynodrel, SC-4642, Enovid, Lynestrol, 17-alpha-ethinyl-17-beta-hydroxy-delta5(10)-estren-3-one, 17-alpha-ethinyl-5,10-estrenolone, NSC 15432

Norethynodrel (CAS 68-23-5) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C20H26O2 and a molecular weight of 298.41900 g/mol. Key properties include a melting point of 169-170ºC, a boiling point of 441.6ºC at 760 mmHg, a density of 1.15g/cm3 and a flash point of 188.2ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
68-23-5
Jingsj CID
J-1956927-8
Molecular Formula
C20H26O2
Molecular Weight
298.41900 g/mol
Category
Ketones
Last updated
8/21/2026

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Physicochemical Properties

Melting Point169-170ºC
Boiling Point441.6ºC at 760 mmHg
Density1.15g/cm3
Flash Point188.2ºC
Exact Mass298.19300
PSA37.30000
LogP3.63660
Refractive Index1.577

Activity & Biological Data

Additional Information[1]. D F HAWKINS, et al. 2 - The Clinical Pharmacology of Oestrogens and Progestagens. 1979,

Frequently Asked Questions

What is the CAS number of Norethynodrel?

The CAS number of Norethynodrel is 68-23-5.

What are the molecular formula and molecular weight of Norethynodrel?

Norethynodrel has molecular formula C20H26O2 and molecular weight 298.41900 g/mol.

What are the upstream and downstream products of Norethynodrel?

For Norethynodrel, Downstream Products: Norethindrone.

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

Last updated:

How to cite: Jingsj. "Norethynodrel (CAS 68-23-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1956927-8 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.