Similar names: 2,6-Pyridinediamine, 3-(2-phenyldiazenyl)-, hydrochloride (1:1); 2,6-Pyridinediamine, 3-(phenylazo)-, monohydrochloride (9CI); Pyridine, 2,6-diamino-3-(phenylazo)-, monohydrochloride (8CI); 2,6-Diamino-3-phenylazopyridine hydrochloride; 2,6-Diamino-3-phenylazopyridine monohydrochloride; Azodyne; Bisteril; Diridone; Mallophene; NC 150; Phenazodine; Phenazopyridine hydrochloride; Phenazopyridinium chloride; Phenylazo tablets; Pirid; Pyridacil; Pyridiate; Pyridium; Pyripyridium; Sedural; Uridinal; Urisept; Urodine; W 1655; β-Phenylazo-α,α'-diaminopyridine hydrochloride