Algestone

Algestone
Clinical data

Synonyms	16α,17α-Dihydroxyprogesterone; 16α,17α-Dihydroxypregn-4-ene-3,20-dione
Drug class	Progestogen
ATC code	None
Legal status
Legal status	In general: ℞ (Prescription only)
Identifiers
IUPAC name (8R,9S,10R,13S,14S,16R,17S)-17-acetyl-16,17-dihydroxy-10,13-dimethyl-2,6,7,8,9,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthren-3-one
CAS Number	595-77-7
PubChem CID	11687
ChemSpider	11196
ChEBI	CHEBI:763^Y
ECHA InfoCard	100.008.974
Chemical and physical data
Formula	C₂₁H₃₀O₄
Molar mass	346.461 g/mol
3D model (JSmol)	Interactive image
SMILES O=C4\C=C2/[C@]([C@H]1CC[C@@]3([C@@](O)(C(=O)C)[C@H](O)C[C@H]3[C@@H]1CC2)C)(C)CC4
InChI InChI=1S/C21H30O4/c1-12(22)21(25)18(24)11-17-15-5-4-13-10-14(23)6-8-19(13,2)16(15)7-9-20(17,21)3/h10,15-18,24-25H,4-9,11H2,1-3H3/t15-,16+,17+,18-,19+,20+,21-/m1/s1 Key:CXDWHYOBSJTRJU-SRWWVFQWSA-N

Algestone (INN) (brand names Alphasone, Alfasone), also known as 16α,17α-dihydroxyprogesterone, is a steroidal progestin used as a contraceptive drug.

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