1-((1S,2R)-1-((2,6-Dimethyldinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepin-4-yl)oxy)-1-phenylpropan-2-yl)-3-phenylurea;1-{(1S,2R)-1-[(11bR)-2,6-Dimethyldinaphtho[2,1-d:1'',2''-f][1,3,2]dioxaphosphepin-4-yloxy]-1-phenylpropan-2-yl}-3-phenylurea;1-{(1S,2R)-1-[(11BR)-2,6-DIMETHYLDINAPHTHO[2,1-D:1',2'-F][1,3,2]DIOXAPHOSPHEPIN-4-YLOXY]-1-PHENYLPROPAN-2-YL}-3-PHENYLUREA,MIN.97%;1-{(1S,2R)-1-[(11bR)-2,6-Dimethyldinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepin-4-yloxy]-1-phenylpropan-2-yl}-3-phenylurea, min. 97%