1-Methyl-4-nitrosopiperazine 1-Nitroso-4-methylpiperazine 16339-07-4 5-23-03-00220 (Beilstein Handbook Reference) BRN 0117135 CCRIS 1151 EINECS 240-409-3 Methylnitrosopiperidine Methylpiperazinenitrosamine N'-Methyl-N-nitrosopiperazine N-Methyl-npz N-Methylnitrosopiperazine N-Nitroso-N'-methylpiperazin [German] N-Nitroso-N'-methylpiperazine N-Nitrosomethylpiperazine NSC 523886 PIPERAZINE, 1-METHYL-4-NITROSO-