N,N'-Dinitrosopiperazine-d 8 is the deuterium labeled N,N'-Dinitrosopiperazine. N,N'-Dinitrosopiperazine (1,4-Dinitrosopiperazine;DNP) is a carcinogen with specificity for nasopharyngeal epithelium and facilitates NPC metastasis. N,N'-Dinitrosopiperazine regulates multiple signaling pathways through protein phosphorylation, including LYRIC at serine 568.