Skip to main content
. Author manuscript; available in PMC: 2022 Sep 1.
Published in final edited form as: Nat Rev Cancer. 2022 Jan 3;22(3):143–155. doi: 10.1038/s41568-021-00423-4

Figure 2 ∣. Structures of NNN, NNK, and NNAL.

Figure 2 ∣

NNN and NNK are carcinogenic tobacco-specific nitrosamines found in all tobacco products. NNAL is the major metabolite of NNK and, like NNK, a potent pulmonary carcinogen. NNAL is found in the urine of all tobacco users.