Pyrene

| OtherNames = Benzo[''def'']phenanthrene | Section1 = | ChEBI = 39106 | SMILES = c1cc2cccc3c2c4c1cccc4cc3 | ChemSpiderID_Ref = | ChemSpiderID = 29153 | PubChem = 31423 | KEGG_Ref = | KEGG = C14335 | InChI = 1/C16H10/c1-3-11-7-9-13-5-2-6-14-10-8-12(4-1)15(11)16(13)14/h1-10H | InChIKey = BBEAQIROQSPTKN-UHFFFAOYAB | ChEMBL_Ref = | ChEMBL = 279564 | StdInChI_Ref = | StdInChI = 1S/C16H10/c1-3-11-7-9-13-5-2-6-14-10-8-12(4-1)15(11)16(13)14/h1-10H | StdInChIKey_Ref = | StdInChIKey = BBEAQIROQSPTKN-UHFFFAOYSA-N | CASNo_Ref = | CASNo = 129-00-0 | UNII_Ref = | UNII = 9E0T7WFW93 | RTECS = UR2450000 | Beilstein = 1307225 | Gmelin = 84203 }} | Section2 = | Section3 = | CrystalStruct = Monoclinic | SpaceGroup = P2₁/a | PointGroup = | LattConst_a = 13.64 Å | LattConst_b = 9.25 Å | LattConst_c = 8.47 Å | LattConst_alpha = | LattConst_beta = 100.28 | LattConst_gamma = | LattConst_ref = | LattConst_Comment = | UnitCellVolume = | UnitCellFormulas = 4 }} | Section4 = | Section7 = | GHSSignalWord = Warning | HPhrases = | PPhrases = | GHS_ref = | NFPA-H = 2 | NFPA-F = 1 | NFPA-R = 0 | FlashPt = non-flammable }} | Section8 = }}

Pyrene is a polycyclic aromatic hydrocarbon (PAH) consisting of four fused benzene rings, resulting in a flat aromatic system. The chemical formula is . This yellow-green solid is the smallest peri-fused PAH (one where the rings are fused through more than one face). Pyrene forms during incomplete combustion of organic compounds. Provided by Wikipedia