ORG-2058

ORG-2058, also known as 16α-ethyl-21-hydroxy-19-norprogesterone, is a progestin of the 19-norprogesterone group which was never marketed.^[1][2] It has high affinity for the progesterone receptor (775% of that of progesterone) and has been used in scientific research to study the role of the progesterone receptor in the body.^[2] The drug has no affinity for the estrogen receptor or the glucocorticoid receptor (less than 0.2% of the affinities of estradiol and dexamethasone, respectively)^[3] and has slight affinity for the mineralocorticoid receptor, but less than that of progesterone.^[4]

ORG-2058

Clinical data
Other names	16α-Ethyl-21-hydroxy-19-norprogesterone; 16α-Ethyl-21-hydroxy-19-norpregn-4-ene-3,20-dione
Identifiers
IUPAC name (8R,9S,10R,13S,14S,16R,17S)-16-ethyl-17-(2-hydroxyacetyl)-13-methyl-2,6,7,8,9,10,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-one
CAS Number	24320-06-7
PubChem CID	119086
ChemSpider	106407
ChEMBL	ChEMBL2311103
Chemical and physical data
Formula	C22H32O3
Molar mass	344.495 g·mol−1
3D model (JSmol)	Interactive image
SMILES CC[C@@H]1C[C@H]2[C@@H]3CCC4=CC(=O)CC[C@@H]4[C@H]3CC[C@@]2([C@H]1C(=O)CO)C
InChI InChI=1S/C22H32O3/c1-3-13-11-19-18-6-4-14-10-15(24)5-7-16(14)17(18)8-9-22(19,2)21(13)20(25)12-23/h10,13,16-19,21,23H,3-9,11-12H2,1-2H3/t13-,16+,17-,18-,19+,21-,22+/m1/s1 Key:IJLXLZGJDSJGIQ-BILPMHSYSA-N

See also

• Promegestone