2H-1,3,2-Oxazaphosphorin-2-amine, 5-(1,1-dimethylethyl)tetrahydro-N,N-dimethyl-3-phenyl-, 2-oxide, cis- 70219-44-2 NSC300842 cis-2-Oxo-2-dimethylamino-3-phenyl-5-tert-butyl-1,3,2-oxazaphosphorinane