Dallergosterolo

Dallergosterolo is a name encountered in a limited portion of biochemical and natural products literature to denote a sterol-like lipid closely related to ergosterol. In practice, the term can refer to a specific compound described in a study or to a broader class of sterol derivatives that share the same steroid nucleus and a hydrophobic side chain. Because there is no universally accepted structure, exact identity varies between sources.

As with other sterols, dallergosterolo is expected to have a tetracyclic cyclopenta[a]phenanthrene core and a hydroxyl group on carbon 3, with a hydrophobic side chain attached at carbon 17. The molecule tends to be lipophilic, showing low solubility in water and good solubility in organic solvents. Variants attributed to the dallergosterolo label may differ in double-bond arrangement or side-chain modifications.

Natural occurrence reports are sparse; some references describe dallergosterolo derivatives isolated from fungi or yeasts, while others discuss laboratory-synthesized analogues designed to probe ergosterol-related biology or to serve as analytical standards for sterol measurements.

Biologically, sterol derivatives influence membrane fluidity and organization, and dallergosterolo compounds are used in research to study sterol–protein interactions, membrane biophysics, or ergosterol biosynthesis channels. In analytical contexts, they can function as chromatographic or spectrometric standards to calibrate assays for related sterols.

Safety data are not standardized; typical chemical hygiene practices apply when handling such compounds, especially relative to organic solvents. Because the term can denote multiple related structures, researchers should consult the source material for the exact structure, stereochemistry, and properties of the dallergosterolo under discussion.