structural formula business number 013h molecular formula c20h12 molecular weight 252.31 label benzo[a]pyrene, benzo(a)pyrene, 3,4-benzopyrene, benzopyrene, 1,2-benzopyrene, benzopyrene standard, benzo(a)pyrene (standard sample), 3,4-benzopyrene, benzo[def]chrysene, 1,2-benzopyrene, aromatic hydrocarbons numbering system physical property data toxicological data ecological data molecular structure data computing chemical data more properties and stability storage method synthesis method purpose numbering system cas number:50-32-8...