1,4-Dinitrosopiperazine 140-79-4 Carcinogen Dinitrosopiperazin Dinitrosopiperazine N,N'-Dinitrosopiperazine N-Dinitrosopiperazine NSC 339 NSC339 Piperazine, 1,4-dinitroso- Usaf do-36 WLN: T6N DNTJ ANO DNO