Synonyms: NSC51341;MLS002667455;6344-84-9;2-(phenylamino)-6,7-dihydropyrimido[4,5-d]pyridazine-5,8-dione;2-Anilinopyrimido(4,5-d)pyridazine-5,8-diol;2-Anilinopyrimido[4,5-d]pyridazine-5,8-diol;AC1Q6KCM;AC1L69SE;HMS3080K04;AR-1C9680;NSC 51341;NSC-51341;SMR001557221;2-anilino-6,7-dihydropyrimido[4,5-d]pyridazine-5,8-dione