Hydroxyprogesterone heptanoate

Hydroxyprogesterone heptanoate (OHPH), also known as hydroxyprogesterone enanthate (OHPE) and sold under the brand names H.O.P., Lutogil A.P., and Lutogyl A.P. among others, is a progestin medication used for progestogenic indications. It has been formulated both alone and in together with estrogens, androgens/anabolic steroids, and other progestogens in several combination preparations (brand names Tocogestan, Trioestrine Retard, and Triormon Depositum). OHPH is given by injection into muscle at regular intervals.

Not to be confused with 17α-Hydroxyprogesterone, Hydroxyprogesterone acetate, or Hydroxyprogesterone caproate.
Hydroxyprogesterone heptanoate
Clinical data
Trade namesH.O.P, Hydroxyprogesterone, Lutogil A.P., Lutogyl A.P., others
Other namesOHPH; Hydroxyprogesterone enanthate; OHPE; 17α-Hydroxyprogesterone heptanoate; 17α-Hydroxyprogesterone heptylate; 17α-Hydroxypregn-4-ene-3,20-dione 17α-heptanoate; 17α-Heptyloylpregn-4-ene-3,20-dione
Routes of
administration		Intramuscular injection
Drug classProgestogen; Progestin; Progestogen ester
ATC code
Identifiers
  • [(8R,9S,10R,13S,14S,17R)-17-Acetyl-10,13-dimethyl-3-oxo-2,6,7,8,9,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthren-17-yl] heptanoate
CAS Number
PubChem CID
ChemSpider
UNII
CompTox Dashboard (EPA)
ECHA InfoCard100.022.724
Chemical and physical data
FormulaC28H42O4
Molar mass442.640 g·mol−1
3D model (JSmol)
SMILES
  • CCCCCCC(=O)OC1(CCC2C1(CCC3C2CCC4=CC(=O)CCC34C)C)C(=O)C
  • InChI=1S/C28H42O4/c1-5-6-7-8-9-25(31)32-28(19(2)29)17-14-24-22-11-10-20-18-21(30)12-15-26(20,3)23(22)13-16-27(24,28)4/h18,22-24H,5-17H2,1-4H3/t22-,23+,24+,26+,27+,28+/m1/s1
  • Key:NKJYZYWCGKSMSV-BDPSOKNUSA-N

OHPH is a progestin, or a synthetic progestogen, and hence is an agonist of the progesterone receptor, the biological target of progestogens like progesterone. It appears to have similar pharmacology to that of the closely related medication hydroxyprogesterone caproate (OHPC).

OHPH was first described by 1954 and was introduced for medical use by 1957. It has been used clinically in France and Monaco in the past but is no longer marketed.

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