2H-1,3,2-Oxazaphosphorine, tetrahydro-2-(bis(2-chloroethyl)amino)-3-benzyl-, 2-oxide 78219-93-9 B 795 Tetrahydro-2-(bis(2-chloroethyl)amino)-3-benzyl-2H-1,3,2-oxazaphosphorine 2-oxide