Overview

Androstanone (5a-androstan-3-one), commonly called "Anone" in the community (not to be confused with androstenone), is the "Social Dominance and Charm Pheromone." While similar in chemical structure to androstenone, the two molecules produce vastly different pheromone effects. Androstanone has the same attraction and status properties as androstenone but delivers them through a much less threatening, smoother channel.

PheromoneXS notes that androstanone may be a chemical released naturally after sex, which could explain the distinctive "warmth" and "afterglow" quality it creates. The community values it for its ability to produce attraction without the aggressive, intimidating edge of androstenone.

Pharmacology

What It Is

Androstanone (5ฮฑ-androstan-3-one) is a C19 androstane steroid with a single ketone at C-3 and a fully saturated ring system. Molecular formula Cโ‚โ‚‰Hโ‚ƒโ‚€O, MW 274.44. It is structurally the simplest androstane ketone โ€” just the androstane skeleton with one carbonyl group.

Biosynthesis

Androstanone is a minor endogenous metabolite in human androgen metabolism. It can be formed by:

  • Oxidation of androsterone (3ฮฑ-ol โ†’ 3-one) via 3ฮฑ-HSD working in reverse
  • Reduction of androstanedione (loss of the 17-ketone)

PheromoneXS notes it may be released after sexual activity, though this is not confirmed in published literature. Its presence in human body secretions is established but at lower levels than androsterone or androstenone.

Key Structural Difference from Androsterone

Androstanone has a 3-ketone where androsterone has a 3ฮฑ-hydroxyl. This is pharmacologically significant:

  • Androsterone's 3ฮฑ-OH allows it to bind the GABAA neurosteroid site โ†’ anxiolytic effects
  • Androstanone's 3-ketone cannot bind this site โ€” it lacks the hydroxyl group required for GABAA modulation
  • This may explain the different subjective profiles: androsterone produces calm authority, while androstanone produces warmth/charm without the neurosteroid sedation

Mechanism of Action (Pheromone)

As a fully saturated androstane (no double bonds), androstanone is:

  • Less volatile than unsaturated molecules (androstenone, androstenol)
  • Longer-lasting on skin
  • Detected primarily via VNO (vomeronasal organ)
  • Less consciously perceptible (works more subconsciously than androstenone)

While one study suggests androstenone and androstanone are "functionally similar," the community strongly disagrees based on practical testing. The community consensus is that androstanone operates through a smoother, less threatening channel โ€” the "backdoor" vs androstenone's "front door."