hydromadinone

{{Short description|Chemical compound}}

{{Drugbox

| IUPAC_name = 6α-Chloro-17α-hydroxypregn-4-ene-3,20-dione

| image = Hydromadinone.svg

| CAS_number = 16469-74-2

| UNII_Ref = {{fdacite|correct|FDA}}

| UNII = 3E4M0PPR7J

| ATC_prefix = None

| ATC_suffix =

| PubChem = 216252

| ChEMBL = 2104256

| DrugBank =

| ChemSpiderID = 187450

| chemical_formula =

| C=21 | H=29 | Cl=1 | O=3

| SMILES = CC(=O)[C@]1(CC[C@@H]2[C@@]1(CC[C@H]3[C@H]2C[C@@H](C4=CC(=O)CC[C@]34C)Cl)C)O

| StdInChI = 1S/C21H29ClO3/c1-12(23)21(25)9-6-16-14-11-18(22)17-10-13(24)4-7-19(17,2)15(14)5-8-20(16,21)3/h10,14-16,18,25H,4-9,11H2,1-3H3/t14-,15+,16+,18+,19-,20+,21+/m1/s1

| StdInChIKey = IMUIZZGKYILUHZ-SCUQKFFVSA-N

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Hydromadinone (INN), also known as 6α-chloro-17α-hydroxyprogesterone, is a steroidal progestin of the 17α-hydroxyprogesterone group which was patented in 1967 but was never marketed.{{cite book| vauthors = Ganellin CR, Triggle DJ |title=Dictionary of Pharmacological Agents|url=https://books.google.com/books?id=A0THacd46ZsC&pg=PA1037|date=21 November 1996|publisher=CRC Press|isbn=978-0-412-46630-4|page=1037}} The C17α acetate ester of hydromadinone, hydromadinone acetate, also exists, but similarly was never marketed.