N-Nitrosonornicotine (NNN) is a tobacco-specific nitrosamine produced during the curing and processing of tobacco. It has been classified as a Group 1 carcinogen. Although no adequate studies of the relationship between exposure to NNN and human cancer have been reported, there is sufficient evidence that NNN causes cancer in experimental animals.

CAS：16543-55-8
中文别名：N-亚硝基去甲烟碱;
英文别名：N-NITROSONORNICOTINE;Nicotine, 1‘-demethyl-1‘-nitroso-;nitrosonornicotine;NNN;
分子式：C9H11N3O
分子量：177.203
精确质量：177.09
Psa：45.56
Logp：1.8378

UNII：X656TZ86DX

外观与性状：白色晶体或淡黄色低熔点固体
密度：1.28g/cm3
沸点：154ºC at 0.2 MM HG
熔点：47ºC
闪点：177.3ºC
折射率：1.642
稳定性：Stable, but air and light sensitive. Incompatible with oxidizing agents.

危险品运输编码：UN 2810
海关编码：2933990090
危险类别：6.1(b)
包装等级：III