ORG-2058

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;

ORG-2058, also known as 16α-ethyl-21-hydroxy-19-norprogesterone, is a progestin of the 19-norprogesterone group which was never marketed. 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. 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) and has slight affinity for the mineralocorticoid receptor, but less than that of progesterone.