Synonyms: PY-80;NSC 520867;BRN 0329539;3822-79-5;(p-((2,4,6-Triamino-5-pyrimidinyl)azo)phenyl)phosphonic acid;Phosphonic acid, (p-((2,4,6-triamino-5-pyrimidinyl)azo)phenyl)-;NSC520867;AC1L2QUM;NSC-520867;LS-106801;[4-[(2,4,6-triaminopyrimidin-5-yl)diazenyl]phenyl]phosphonic acid;{4-[(E)-(2,4,6-triaminopyrimidin-5-yl)diazenyl]phenyl}phosphonic acid