2,7-Diamino-4,9-dihydro-4,9-dihydroxypyrido(2,3,4,5-lmn)phenanthridine-5,10-dione 58996-11-5 Pyrido(2,3,4,5-lmn)phenanthridine-5,10-dione, 2,7-diamino-4,9-dihydro-4,9-dihydroxy-