Compound Monograph
Poststerone
A C21 metabolite of 20-hydroxyecdysone reported to enlarge muscle-fibre cross-sectional area in rats.
Sources · 1
Where Does It Come From?
Poststerone is a naturally occurring ecdysteroid, found in Ecdysteroid-bearing plants and insects. Its toxicity is not yet characterized.
Concentration
Content by Source
Concentrations not reported. No percent-dry-weight or mg/g figures have been published for this compound in its source plants.
Research & Evidence
Poststerone is a C21 ecdysteroid formed as a metabolite of 20-hydroxyecdysone. In rats, poststerone and 20-hydroxyecdysone both enlarged muscle-fibre cross-sectional area (PMID 30923008). It is reached here through the black-ant monograph, where it is an inferred presence — the ant is documented to contain ecdysterone, but poststerone itself has not been directly quantified in it.
Toxicity & Safety
No isolated-compound toxicity dataset exists. The ecdysteroid class is generally low-toxicity in mammals, but that is a class statement, not a characterisation of this metabolite.
Placeholder entry — a full monograph is pending via the compound-expansion worklist.
