25mg. (11aR)-10,11,12,13-Tetrahydro-10,10,13,13-tetramethyl-5-hydroxy-3,7-di-9-phenanthrenyl-5-oxide-diindeno[7,1-de:1',7'-fg][1,3,2]dioxaphosphocin, 98%, (99% ee). . Molecular Weight: 722.8. Molecular Formula: C49H39O4P. Color/form: off white to light yellow pwdr. Strem# 15-8572. http://www.strem.com/catalog/v/15-8572/