hat
Li konsiste de yon bag aromat ki pa gen yon bag heterocyclic oswa yon substituent. Anpil nan yo se li te ye oswa potansyèl karsinojèn. Pi senp la nan pwodui chimik sa a se naphthalene, ak de bag aromat, osi byen ke trizyklik konpoze Ruthenium ak phenantrene.
eng
It consists of an aromatic ring that does not contain a heterocyclic ring or a substituent. Many of them are known or potential carcinogens . The simplest of this chemical is naphthalene , with two aromatic rings, as well as tricyclic compounds ruthenium and phenanthrene .