title: Carcinogenic nitrogen compounds. LXXX. (1)Benzopyrano-(4,3-b)indoles and 6H-(1)benzopyrano(4,3-b)quinolines.
mesh_terms: D001578:Benzopyrans / Q000138:chemical synthesis*; D002273:Carcinogens / Q000138:chemical synthesis*; D007211:Indoles / Q000138:chemical synthesis*; D011804:Quinolines / Q000138:chemical synthesis*
chemical_list: D001578:Benzopyrans; D002273:Carcinogens; D007211:Indoles; D011804:Quinolines