(11bS)-4-Hydroxy-2,6-di-p-tolyldinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepine 4-oxide 250mg

(11bS)-4-Hydroxy-2,6-di-p-tolyldinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepine 4-oxide 250mg