Synonyms: 7597-43-5;NSC56877;AC1L6FC5;2-phenyl-1,3-dihydro-1,3,2;NSC-56877;1H-1,2-Benzodiazaphosphole, 2,3-dihydro-2-phenyl-, 2-oxide;2-phenyl-2,3-dihydro-1H-1,3,2-benzodiazaphosphole 2-oxide;8-phenyl-7,9-diaza-8lambda5-phosphabicyclo[4.3.0]nona-1(6),2,4-trien 8-oxid