Systematic (IUPAC) name
CAS Registry Number
ATC code None
PubChem CID:
Synonyms 9β,10α-Progesterone, 9β,10α-pregn-4-ene-3,20-dione
Chemical data
Formula C21H30O2
Molecular mass 314.4617 g/mol

Retroprogesterone, also known as 9β,10α-progesterone or as 9β,10α-pregn-4-ene-3,20-dione, is a synthetic steroid and stereoisomer of the natural progestogen, progesterone.[1][2] It is the parent compound of a group of progestins consisting of dydrogesterone (6-dehydroretroprogesterone) and trengestone (1,6-bis-dehydro-6-chloro-retroprogesterone).[1][2][3] Retroprogesterone itself binds with high affinity to the progesterone receptor as well.[4]

See also


  1. ^ a b J. Horsky; J. Presl (6 December 2012). Ovarian Function and its Disorders: Diagnosis and Therapy. Springer Science & Business Media. pp. 305, 329.  
  2. ^ a b Lt Col Pankaj Talwar; Surveen Ghumann Sindhu (18 May 2012). Step by Step: Protocols in Clinical Embryology and ART. JP Medical Ltd. pp. 379–.  
  3. ^ Padubidri (1 January 2005). Gynaecology. Elsevier India. pp. 207–.  
  4. ^ Gerald Litwack (2 December 2012). Biochemical Actions of Hormones. Elsevier. pp. 193–.