Ergostane steroids are a class of steroid compounds with a distinct ergosterol-based structure, which is characterized by the presence of double bonds at positions C11 and C17. These steroids are often derived from sterols found in plants, fungi, and certain algae, making them structurally similar to but distinct from traditional animal-derived steroids such as testosterone. In the realm of pharmacology, ergostane derivatives have been explored for their potential applications, including anti-inflammatory, immunomodulatory, and cardiovascular benefits. They are also of interest in sports science due to their structural similarities to anabolic-androgenic steroids (AAS), although they do not possess the same potent androgenic activity. Research into these compounds continues to uncover new insights into their biological activities and potential therapeutic uses.