Return to Results

Levonorgestrel

CAS Registry Number®

797-63-7

CAS Name

Levonorgestrel

Molecular Formula

C21H28O2

Molecular Mass

312.45

Cite this Page

Levonorgestrel.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?cas_rn=797-63-7 (retrieved 2024-11-22) (CAS RN: 797-63-7).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Compound Properties

  • Melting Point (1)

    235-237 °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/C21H28O2/c1-3-20-11-9-17-16-8-6-15(22)13-14(16)5-7-18(17)19(20)10-12-21(20,23)4-2/h2,13,16-19,23H,3,5-12H2,1H3/t16-,17+,18+,19-,20-,21-/m0/s1

InChIKey

InChIKey=WWYNJERNGUHSAO-XUDSTZEESA-N

SMILES

C(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(CC)C3CCC4(O)C#C)C2CC1

Other Names for this Substance

  • 18,19-Dinorpregn-4-en-20-yn-3-one, 13-ethyl-17-hydroxy-, (17α)-
  • 18,19-Dinor-17α-pregn-4-en-20-yn-3-one, 13-ethyl-17-hydroxy-
  • (17α)-13-Ethyl-17-hydroxy-18,19-dinorpregn-4-en-20-yn-3-one
  • 13-Ethyl-17α-ethynylgon-4-en-17β-ol-3-one
  • 13β-Ethyl-17α-ethynyl-17β-hydroxygon-4-en-3-one

View All

Deleted or Replaced CAS Registry Numbers

121714-72-5, 797-62-6, 4222-79-1, 1050679-25-8

CAS INSIGHTSTM
Targeted protein degrader structure, illustration