1,2-Benzenediamine, 4,5-dichloro- 1,2-Diamino-4,5-dichlorobenzene 1,2-Dichloro-4,5-diaminobenzene 4,5-Dichloro-o-phenylendiamine 4,5-Dichloro-o-phenylenediamine 5348-42-5 NSC1577 o-Phenylenediamine, 4,5-dichloro-