N-diphenoxyphosphorylbutan-1-amine

1,1-bis(diphenylphosphoryl)-2,2,2-trifluoroethanol

2-diphenylphosphoryl-1,4-diphenylbutane-1,4-dione

1-chloro-2-diphenylphosphorylbenzene

diphenyl(1-propynyl)phosphine oxide