TSNAs consist of four chemical compounds:
- N-nitrosonornicotine (NNN)
- 4-methyl-N-nitrosamino-1-(3-pyridyl)-1-butanone (NNK)
- N-nitrosoanatabine (NAT)
- N-nitrosoanabasine (NAB)
Hoffman, D et al, "The biological significance of tobacco-specific N-nitrosamines: smoking and adenocarcinoma of the lung." Critical Reviews in Toxicology, 1996; 26(2): 199-211.
"Reducing the Health Consequences of Smoking: 25 Years of Progress. A report of the Surgeon General 1989." U.S. Department of Health and Human Services.
Prokopczyk, B et al. "Identification of Tobacco-specific carcinogen in the cervical mucus of smokers and non-smokers." Journal of the National Cancer Institute, 1997 Jun 18;89(12):868-73.

