Norethindrone

CAS Registry Number®

68-22-4

CAS Name

Norethindrone

Molecular Formula

C20H26O2

Molecular Mass

298.42

Cite this Page

Norethindrone.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?cas_rn=68-22-4 (retrieved 2024-11-24) (CAS RN: 68-22-4).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Compound Properties

  • Melting Point (1)

    203-204 °C

Source(s)

  • (1) Hazardous Substances Data Bank data were obtained from the National Library of Medicine (US)

Other Names and Identifiers

InChI

InChI=1S/C20H26O2/c1-3-20(22)11-9-18-17-6-4-13-12-14(21)5-7-15(13)16(17)8-10-19(18,20)2/h1,12,15-18,22H,4-11H2,2H3/t15-,16+,17+,18-,19-,20-/m0/s1

InChIKey

InChIKey=VIKNJXKGJWUCNN-XGXHKTLJSA-N

SMILES

C[C@@]12[C@]([C@]3([C@](CC1)([C@@]4(C(CC3)=CC(=O)CC4)[H])[H])[H])(CC[C@]2(C#C)O)[H]

Canonical SMILES

O=C1C=C2CCC3C(CCC4(C)C3CCC4(O)C#C)C2CC1

Other Names for this Substance

  • 19-Norpregn-4-en-20-yn-3-one, 17-hydroxy-, (17α)-
  • 19-Nor-17α-pregn-4-en-20-yn-3-one, 17-hydroxy-
  • (17α)-17-Hydroxy-19-norpregn-4-en-20-yn-3-one
  • 17α-Ethinylestr-4-en-17β-ol-3-one
  • 17α-Ethinyl-17β-hydroxy-Δ4-estren-3-one

View All

Deleted or Replaced CAS Registry Numbers

1050679-17-8, 3024623-63-7

CAS INSIGHTSTM
Hourglass and a clock