Formestane

Name: Formestane — Molecular Data
Creator: MolForge
License: https://creativecommons.org/publicdomain/zero/1.0/

C₁₉H₂₆O₃ — CID 11273

💊View drug profile → formestane

Data last refreshed: 2026-04-14 (MolForge compound catalog, from PubChem)

IUPAC(8R,9S,10R,13S,14S)-4-hydroxy-10,13-dimethyl-2,6,7,8,9,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthrene-3,17-dione

SMILESC[C@]12CCC(=O)C(O)=C1CC[C@@H]1[C@@H]2CC[C@]2(C)C(=O)CC[C@@H]12

InChIInChI=1S/C19H26O3/c1-18-10-8-15(20)17(22)14(18)4-3-11-12-5-6-16(21)19(12,2)9-7-13(11)18/h11-13,22H,3-10H2,1-2H3/t11-,12-,13-,18+,19-/m0/s1

InChIKeyOSVMTWJCGUFAOD-KZQROQTASA-N

MW302.41 g/mol

LogP3.97

Rot. Bonds

About Formestane

Formestane (PubChem CID 11273) has the molecular formula C₁₉H₂₆O₃ and a molecular weight of 302.41 g/mol. Its IUPAC name is (8R,9S,10R,13S,14S)-4-hydroxy-10,13-dimethyl-2,6,7,8,9,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthrene-3,17-dione.

Molecular Properties

Compound Name	Formestane
PubChem CID	11273
Molecular Formula	C₁₉H₂₆O₃
Molecular Weight	302.41 g/mol
Exact Mass	302.19
IUPAC Name	(8R,9S,10R,13S,14S)-4-hydroxy-10,13-dimethyl-2,6,7,8,9,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthrene-3,17-dione
SMILES	C[C@]12CCC(=O)C(O)=C1CC[C@@H]1[C@@H]2CC[C@]2(C)C(=O)CC[C@@H]12
InChI	InChI=1S/C19H26O3/c1-18-10-8-15(20)17(22)14(18)4-3-11-12-5-6-16(21)19(12,2)9-7-13(11)18/h11-13,22H,3-10H2,1-2H3/t11-,12-,13-,18+,19-/m0/s1
InChIKey	OSVMTWJCGUFAOD-KZQROQTASA-N
XLogP	3.97
TPSA	54.37 Å²
H-Bond Donors	1
H-Bond Acceptors	3
Rotatable Bonds
Heavy Atoms	22
Complexity	—

Lipinski Rule of Five

Passes Rule of Five

Rule	Value
MW ≤ 500	302.41
LogP ≤ 5	3.97
H-Bond Donors ≤ 5	1
H-Bond Acceptors ≤ 10	3

Related Compounds

Frequently Asked Questions

What is the IUPAC name of Formestane?

The IUPAC name of Formestane (CID 11273) is (8R,9S,10R,13S,14S)-4-hydroxy-10,13-dimethyl-2,6,7,8,9,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthrene-3,17-dione.

What is the SMILES notation for Formestane?

The canonical SMILES for Formestane is C[C@]12CCC(=O)C(O)=C1CC[C@@H]1[C@@H]2CC[C@]2(C)C(=O)CC[C@@H]12.

What is the InChIKey of Formestane?

The InChIKey is OSVMTWJCGUFAOD-KZQROQTASA-N. The full InChI is InChI=1S/C19H26O3/c1-18-10-8-15(20)17(22)14(18)4-3-11-12-5-6-16(21)19(12,2)9-7-13(11)18/h11-13,22H,3-10H2,1-2H3/t11-,12-,13-,18+,19-/m0/s1.

What are the key properties of Formestane?

Formestane has a molecular weight of 302.41 g/mol, XLogP of 3.97, 0 rotatable bonds, 1 hydrogen bond donors, and 3 hydrogen bond acceptors.

Where does this data come from?

All data for Formestane is sourced from PubChem (CID 11273), the world's largest open chemistry database maintained by the National Library of Medicine (NIH).

Browse: Molecules: F · all molecules A–Z · drugs A–Z · protein targets A–Z.

Sources

PubChem CID 11273 — identifiers, structure, computed properties (public domain)
DrugCentral drug card 1238 — approved-drug record (CC BY-SA 4.0)

How this page is built: methodology · editorial policy & corrections.

For research and educational use only — not medical advice. This page is compiled automatically from public databases. It is not written or reviewed by a clinician. Do not start, stop or change any treatment based on it; consult a qualified healthcare professional. Spotted an error? See our corrections policy or email hello@molforge.ai.