Synonyms: Urovalidin;AC1L4TW5;3-Isoxazolidinone, 4,4'-(1,4-phenylenebis(methylidynenitrilo))bis-, mixt. with 3-(phenylazo)-2,6-pyridinediamine (1:1);4-[[4-[(3-oxo-1,2-oxazolidin-4-yl)iminomethyl]phenyl]methylideneamino]-1,2-oxazolidin-3-one; 3-phenyldiazenylpyridine-2,6-diamine