CAS Registry Number

CAS 18531-99-2 — (S)-(-)-1,1'-Bi-2-naphthol, also known as (S)-BINOL

(S)-(-)-1,1'-Bi-2-naphthol, or (S)-BINOL, is a chiral organic compound widely used as a ligand in asymmetric catalysis, particularly in hydrogenation, Diels-Alder reactions, and other stereoselective transformations. It is also employed in chiral resolution and as a building block in organic synthesis. CAS 18531-99-2, molecular formula C20H14O2, molecular weight 286.32 g/mol. Store at ambient temperature. Hazard classification: Signal word *Danger*, with specific risks including eye damage and skin irritation. Full SDS available on request. Molekula supplies (S)-BINOL from research to bulk quantities with full documentation and ISO 9001:2015 traceability.