Rosterin

Rosterin is a fictional chemical compound used primarily in educational materials to illustrate principles of organic synthesis, structural nomenclature, and spectroscopic analysis. The name appears in problem sets, textbooks, and classroom demonstrations as a stand-in for a small- to medium-size organic molecule. In most depictions, rosterin is described as having a heterocyclic core, commonly a five- or six-membered ring containing nitrogen, fused to or substituted by carbonyl or alkyl groups. Because rosterin is not a real substance, there is no official molecular formula, CAS number, or regulatory status; variations exist only within teaching examples.

In typical instructional illustrations, rosterin may be drawn with functional groups that enable common reactions such as acylation, alkylation, or heterocycle formation, allowing students to practice retrosynthesis and reaction planning. Physical-property descriptions in educational contexts vary, but rosterin is often described as a crystalline solid with moderate solubility in organic solvents and limited aqueous solubility, though exact properties depend on the example used.

Applications of rosterin in teaching include illustrating NMR, IR, and MS data interpretation, as well as demonstrating how to propose synthetic routes from commercially available starting materials. Because rosterin is fictional, real-world safety data sheets and regulatory classifications do not apply; it exists as a pedagogical construct rather than a marketed compound.