(1R)-2,2',3,3'-Tetrahydro-1,1'-spirobi[1H-indene]-7,7'-diol

CAS 223259-62-9

The R descriptor in (R)-SPINOL specifies a handed molecular framework, not a purity grade or a guaranteed reaction outcome. CAS 223259-62-9 identifies this enantiomer of a rigid spirocyclic diol. Its hydroxyl groups provide sites for building more elaborate structures, while the ring system organizes their spatial environment. Chemical purity and enantiomeric purity remain separate requirements: a clean sample can still contain both mirror-image forms. Likewise, a derivative's catalytic behavior must be established for its full structure and reaction system. An R starting framework does not automatically give an R reaction product. This building block shows how precise stereochemical identity supports meaningful comparisons in chiral chemistry, providing a controlled starting point while leaving actual selectivity to experimental measurement for each specific application.