This highly enantiopure chiral organocatalyst (>99% e.e.), N-​[(11bR)​-​2,​6-​bis(9-​anthracenyl)​-​4-​oxido-​dinaphtho[2,​1-​d:1',​2'-​f][1,​3,​2]​dioxaphosphepin-​4-​yl]​-​1,​1,​1-​trifluoromethanesulfonamide, features a BINOL-​derived phosphorus core with sterically demanding di-​9-​anthracenyl substituents. It serves as a powerful Brønsted acid for asymmetric catalysis, enabling high enantioselectivity in reactions such as Pictet-​Spengler cyclizations, aza-​Friedel-​Crafts alkylations, enantioselective protonations, and other C-​C/C-​N bond formations. The triflimide moiety enhances acidity, while the chiral scaffold ensures stereocontrol via steric and π-​stacking interactions. Primarily used in pharmaceutical and fine chemical synthesis to produce enantiomerically pure compounds; it is a specialty chemical intermediate/ligand, not a commodity.