1-Androsterone (also known as 1-andro, 1-dehydroepiandrosterone, 1-DHEA, δ1-epiandrosterone, or 5α-androst-1-en-3β-ol-17-one) is a synthetic, orally active anabolic-androgenic steroid (AAS).

[1] It is an androgen prohormone of 1-testosterone (dihydroboldenone), 1-androstenedione, and other 1-dehydrogenated androstanes.

[1] The drug has been sold on the Internet as a designer steroid and "dietary supplement".

[1] It is a positional isomer of dehydroepiandrosterone (DHEA; 5-dehydroepiandrosterone).

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