moleculefinder

Finasteride

C23H36N2O2372.5 g/mol Calculated

Also called Propecia, Chibro-Proscar, Finastid and Finpecia.

A hormone medicine sold as Proscar and Propecia, used for enlarged prostate and for male pattern hair loss.

Sources and notes
  • The introductionfrom sourceMoleculeFinder curated
  • Other namesfrom sourcePubChem / Wikidata
  • Formula and weightcomputedPubChem
  • 2D drawingcomputedPubChem structure, drawn by RDKit
  • 3D modelfrom sourcePubChem 3D conformerLoaded after the page has painted, and on a phone only when you ask for it; the 2D drawing shows until it arrives.

Where you encounter it

Dispensed on prescription, not sold on a shelf. Finasteride on the product labels we hold.

Medicines

ProscarAdded by the makerActive ingredient

Every product and list we hold

Sources and notes
  • The product labels and their strengthsfrom sourceDailyMed (FDA label)Each label lists the molecule as an ingredient, and an active ingredient at the strength shown.
  • How it gets therefrom sourceMoleculeFinder curatedEach mark is set by hand on our lists, never inferred; a label's ingredient is added by the maker. A row with no mark data says Not marked.
  • The line abovefrom sourceMoleculeFinder curatedFrom the group the molecule belongs to.

Explore its structure

Choose a part to light it up.

A C=O bonded to a nitrogen, the same link that joins amino acids in a protein. It is sturdy, and its nitrogen is not a base the way an amine's is.

From: standard chemistry.

Sources and notes
  • The drawingcomputedPubChem structure, drawn by RDKitThe page's one shipped drawing, with the chosen part lit in amber under it.
  • The partscomputedFound by ruleEach part is found by a chemical pattern, never picked by hand atom by atom; its words say where they come from.

Compare a related molecule

Finasteride

Minoxidil

Finasteride blocks the enzyme that makes DHT, the hormone behind male pattern hair loss, while minoxidil leaves hormones alone and widens scalp vessels.

Finasteride vs Minoxidil, side by side

Also compared

Sources and notes
  • The sentencefrom sourceMoleculeFinder comparison notesThe pair's answer line.
  • The two drawingscomputedPubChem structures, drawn by RDKitThe two drawings side by side.

Properties and sources

Calculated by PubChem

Molecular formula
C23H36N2O2
Molecular weight
372.5 g/mol
XLogP3octanol/water, log units
3
Polar surface areatopological
58.2 Ų
H-bond donors
2
H-bond acceptors
2
Rotatable bonds
2
Complexity
678

Reported Hazard label (GHS), ECHA via PubChem

Danger Irritant pictogram (GHS07), Health hazard pictogram (GHS08) and Environmental pictogram (GHS09); hazard statements H302, H360, H372, H410

Reported Licence

The US Food and Drug Administration licenses Finasteride for human use (NDA 020180, authorized June 19, 1992), as Proscar. Drugs@FDA

Groups it belongs to

Category
Prescription medicine
Family
Hormone medicines
Chemical groups
Amides
Elements
Nitrogen
Hazard classes
Irritant, Health hazard, Environmental hazard, GHS Danger
SMILESC[C@]12CC[C@H]3[C@H]([C@@H]1CC[C@@H]2C(=O)NC(C)(C)C)CC[C@@H]4[C@@]3(C=CC(=O)N4)C

PubChem CID 57363 · Wikidata Q424167 · InChIKey DBEPLOCGEIEOCV-WSBQPABSSA-N · Data refreshed

How MoleculeFinder sources and labels its data

Questions
What is Finasteride?
A hormone medicine sold as Proscar and Propecia, used for enlarged prostate and for male pattern hair loss.
How toxic is Finasteride?
Its GHS hazard label carries the signal word Danger and the hazard pictograms Irritant, Health hazard and Environmental. from source
What kind of molecule is Finasteride?
Finasteride has the formula C23H36N2O2 and a molecular weight of 372.5 g/mol. MoleculeFinder files it under hormone medicines, in the prescription medicine group. from sourcefrom sourcefrom sourcefrom source
Who licenses Finasteride as a medicine?
The US Food and Drug Administration licenses Finasteride for human use (NDA 020180, authorized June 19, 1992), as Proscar. from source
Sources and notes
  • Calculated valuescomputedPubChemComputed from the structure, so no laboratory conditions apply; complexity is PubChem's own structural score.
  • Hazard labelfrom sourceECHA via PubChemThe label combines these classifications.
  • ECHAfrom sourceAttributionSource: European Chemicals Agency, echa.europa.eu.
  • Licencefrom sourceDrugs@FDARead 2026-10-21.
  • Data refreshedfrom sourceMoleculeFinder2026-11-09

Keep exploring

Compared side by side with finasterideMinoxidilC9H15N5OCompared side by side with finasterideDutasterideC27H30F6N2O2No functional group in common: Progesterone carries a ketone group, while Finasteride carries an amide group.ProgesteroneC21H30O2
Sources and notes
  • Compared side by sidefrom sourceMoleculeFinder comparison notesA molecule we compare it with on its own page.
  • Similar in shapecomputedRDKit Morgan/TanimotoNeighbours by structural fingerprint; the sentence names the chemical groups the two share.
  • The drawingscomputedPubChem structures, drawn by RDKit