2,6-Diamino-3-(phenylazo)pyridine 2,6-Pyridinediamine, 3-(phenylazo)- 3-(Phenylazo)-2,6-pyridinediamine 94-78-0 AP DPP Diridone Gastracid Mallophene NC 150 NSC145895 Phenazodine Phenazopyridine Phenylazo tablet Pirid Pyrazofen Pyridacil Pyridine, 2,6-diamino-3-(phenylazo)- Pyridium Pyripyridium Sedural Uridinal Urodine W 1655 WLN: T6NJ BZ CNUNR& FZ