4275 Dibenzo(a,i)pyrene Dibenzo(a,i)pyrene belongs to the family of Benzopyrenes. These are organic compounds containing a benzene fused to a pyrene(benzo[def]phenanthrene) ring system. It is an environmental polycyclic aromatic hydrocarbon, is the most potent carcinogen ever tested in mouse skin and rat mammary gland. 189-55-9 9106 C24H14 302.4 White powder. 2B, possibly carcinogenic to humans. (L135) This is a toxic chemical found in cigarettes or generated by tobacco combustion. 2014-08-29T05:54:10Z 2026-04-17T15:55:49Z C19223 true C1=CC=C2C(=C1)C=C1C=CC3=CC4=CC=CC=C4C4=C3C1=C2C=C4 C24H14 InChI=1S/C24H14/c1-3-7-19-15(5-1)13-17-9-10-18-14-16-6-2-4-8-20(16)22-12-11-21(19)23(17)24(18)22/h1-14H TUGYIJVAYAHHHM-UHFFFAOYSA-N 302.368 302.109550448 Exogenous Solid HMDB60116 8752 CHEM003181 DTXSID9059751 0.0 99.62299999999996 35.479539235307485 0 0 0 0 6 7.49 -8.93 3.53e-07 g/l