Table 1. Carcinogenic compounds found in tobacco smoke.

[5]

Class	Compound names
Polycyclic aromatic hydrocarbons	Naphthalene, benz[a]anthracene, benzo[c]phenanthrene, chrysene, 5-methylchrysene, benz[j]aceanthrylene, benzo[b]fluoranthene, benzo[j]fluoranthene, cyclopenta[cd]pyrene, indeno[1,2,3-cd]pyrene, dibenz[a,h]anthracene, benzo[a]pyrene, dibenzo[a,h]pyrene, dibenzo[a,i]pyrene, dibenzo[a,l]pyrene
Alkenes	1,3-butadiene, isoprene, styrene
Monocyclic aromatic hydrocarbons	Benzene, ethylbenzene, cumene
Aromatic amines	Aniline, ortho-toluidine, 2,6-dimethylaniline, 4-aminobiphenyl
Cyclic N-nitrosamines	N-nitrosopyrrolidine, N′-nitrosonornicotine, N′-nitrosonornicotine, N-nitrosomorpholine
Ethers	Ethylene oxide, methyleugenol, furan, benzofuran
Aldehydes	Formaldehyde, acetaldehyde, acrolein, crotonaldehyde