Synonyms: Ferrate(1-),tris(4-ethenylphenyl 4-hydroxy-3-nitrosobenzoato-N3,O4)-, sodium, (OC-6-22)-;Ferrate(1-), tris(hydrogen 4-hydroxy-3-nitrosobenzoato)-, sodium,tris(p-vinylphenyl) ester (8CI); Benzoic acid, 4-hydroxy-3-nitroso-,4-ethenylphenyl ester, iron complex; Ferroverdin