4276 Dibenzo(a,h)pyrene Dibenzo(a,h)pyrene is a polycyclic aromatic hydrocarbon made of five fused benzene rings. It is a fused five ringed, cyclopenta, PAHs compound which is common as a pollutant of smoke and oils. It is white to light yellow crystalline solid. It is stable and highly genotoxic in bacterial and mammalian cell systems, as it intercalates into DNA and causes mutations. 189-64-0 9108 C24H14 302.4 White powder. 2B, possibly carcinogenic to humans. (L135) This is a toxic chemical found in cigarettes or generated by tobacco combustion. 2014-08-29T05:54:16Z 2026-04-17T15:55:49Z C19222 true C1=CC=C2C(=C1)C=C1C=CC3=C4C(C=CC2=C14)=CC1=CC=CC=C31 C24H14 InChI=1S/C24H14/c1-3-7-19-15(5-1)13-17-9-12-22-20-8-4-2-6-16(20)14-18-10-11-21(19)23(17)24(18)22/h1-14H RXUSYFJGDZFVND-UHFFFAOYSA-N 302.368 302.109550448 Exogenous Solid 8754 CHEM003182 DTXSID4059752 hexacyclo[10.10.2.0²,⁷.0⁹,²³.0¹³,¹⁸.0²⁰,²⁴]tetracosa-1(23),2,4,6,8,10,12(24),13,15,17,19,21-dodecaene