Benz[5,6]isoindolo[2,1-b]isoquinoline-8,13-dione, 5,14- dihydro-9-[[hydroxy(phenylmethoxy)phosphinyl]oxy]-14-methyl-, monosodium salt GR 63178A NSC611615 Phosphoric acid, mono(phenylmethyl) mono(5,8,13,14-tetrahydro-14-methyl- 8,13-dioxobenz[5,6]isoindolo[2,1-b]isoquinolin-9-yl)ester, sodium salt