100mg. (11aS)-3,7-Bis[3,5-bis(tert-butyl)-4-methoxyphenyl]-10,11,12,13-tetrahydro-10,10,13,13-tetramethyl-5-hydroxy-5-oxide-diindeno[7,1-de:1',7'-fg][1,3,2]dioxaphosphocin, 98%, (99% ee). . Molecular Weight: 807. Molecular Formula: C51H67O6P. Color/form: off white to light yellow pwdr. Strem# 15-8589. http://www.strem.com/catalog/v/15-8589/