2H-1,3,2-Oxazaphosphorine, tetrahydro-2-(bis(2-chloroethyl)amino)-6-methyl-, 2-sulfide 78220-04-9 B 675 Tetrahydro-2-(bis(2-chloroethyl)amino)-6-methyl-2H-1,3,2-oxazaphosphorine 2-sulfide