Pyrene is a single, well-defined molecule, made of four fused benzene rings. It is a polycyclic aromatic hydrocarbon (PAH) molecule, which can be obtained by means of various processes, including the incomplete combustion of organic matter (such as wood and tobacco) and the photoionization of larger hydrocarbons, as it happens in the interstellar space . Pyrene photoionization is studied to understand its electronic structure and for the development of new materials (Figueira-Duarte & Mullen, 2011). Let us remember that pyrene is a pollutant, and it can be found in air, water, and soil , released into the environment because of industrial activities and burning of fossil fuels. Here we illustrate some Raman spectra of Pyrene. We will see that , in the case of pyrene generated nanograins, obtained a spectrum which looks like that of biochar. We will also consider the results obtained by , about their proposal of a structural analysis of char made by means of Raman spectroscopy.