1.0 2010-04-08 22:07:43 UTC 2025-11-18 23:05:12 UTC FDB007671 Fluorene Fluorene, also known as diphenylenemethane or 9h-fluorene, is a member of the class of compounds known as fluorenes. Fluorenes are compounds containing a fluorene moiety, which consists of two benzene rings connected through either a cyclopentane, cyclopentene, or cyclopenta-1,3-diene. Fluorene is practically insoluble (in water) and an extremely weak acidic compound (based on its pKa). Fluorene can be found in corn, which makes fluorene a potential biomarker for the consumption of this food product. Fluorene is formally rated as an unfounded non-carcinogenic (IARC 3) potentially toxic compound. Fluorene , or 9H-fluorene, is a polycyclic aromatic hydrocarbon. It forms white crystals that exhibit a characteristic, aromatic odor similar to that of naphthalene. It is combustible. It has a violet fluorescence, hence its name. For commercial purposes it is obtained from coal tar. It is insoluble in water and soluble in many organic solvents . PAHs are carcinogens and have been associated with the increased risk of skin, respiratory tract, bladder, stomach, and kidney cancers. They may also cause reproductive effects and depress the immune system (L10) (T3DB). 2,2'-methylene biphenyl 2,2'-Methylenebiphenyl 2,3-Benzindene 9H-Fluorene alpha-diphenylenemethane-9H-fluorene Diphenylenemethane ghl.PD_Mitscher_leg0.1322 Methane, diphenylene- O-biphenylenemethane O-biphenylmethane C13H10 166.2185 166.07825032 9H-fluorene fluorene 86-73-7 C1C2=CC=CC=C2C2=CC=CC=C12 InChI=1S/C13H10/c1-3-7-12-10(5-1)9-11-6-2-4-8-13(11)12/h1-8H,9H2 NIHNNTQXNPWCJQ-UHFFFAOYSA-N belongs to the class of organic compounds known as fluorenes. Fluorenes are compounds containing a fluorene moiety, which consists of two benzene rings connected through either a cyclopentane, cyclopentene, or cyclopenta-1,3-diene. Fluorenes Organic compounds Benzenoids Fluorenes Aromatic homopolycyclic compounds Aromatic hydrocarbons Polycyclic hydrocarbons Unsaturated hydrocarbons Aromatic homopolycyclic compound Aromatic hydrocarbon Fluorene Hydrocarbon Polycyclic hydrocarbon Unsaturated hydrocarbon an aromatic compound ortho-fused polycyclic arene ortho-fused tricyclic hydrocarbon logp 4.26 ALOGPS logs -4.82 ALOGPS solubility 2.52e-03 g/l ALOGPS melting_point 114.8 oC logp 3.74 ChemAxon pka_strongest_acidic 17.79 ChemAxon iupac 9H-fluorene ChemAxon average_mass 166.2185 ChemAxon mono_mass 166.07825032 ChemAxon smiles C1C2=CC=CC=C2C2=CC=CC=C12 ChemAxon formula C13H10 ChemAxon inchi InChI=1S/C13H10/c1-3-7-12-10(5-1)9-11-6-2-4-8-13(11)12/h1-8H,9H2 ChemAxon inchikey NIHNNTQXNPWCJQ-UHFFFAOYSA-N ChemAxon polar_surface_area 0 ChemAxon refractivity 54.87 ChemAxon polarizability 19.36 ChemAxon rotatable_bond_count 0 ChemAxon acceptor_count 0 ChemAxon donor_count 0 ChemAxon physiological_charge 0 ChemAxon formal_charge 0 ChemAxon Specdb::NmrOneD 2680 Specdb::NmrOneD 3366 Specdb::EiMs 431 Specdb::CMs 105951 Specdb::CMs 118084 Specdb::MsMs 49239 Specdb::MsMs 49240 Specdb::MsMs 49241 Specdb::MsMs 114261 Specdb::MsMs 114262 Specdb::MsMs 114263 Specdb::MsMs 3434483 Specdb::MsMs 3434484 Specdb::MsMs 3434485 Specdb::MsMs 3434486 Specdb::MsMs 3434487 Specdb::MsMs 3434488 28266 Carrot Type 1 specific Daucus carota ssp. sativus 79200 0.0 0.0 0.0 mg/100 g Corn Type 1 specific Zea mays 4577