S1 Supporting Information Radicals from the Gas-Phase Pyrolysis of Lignin Model Compounds. p-Coumaryl Alcohol Meng-xia Xu 1 , Lavrent Khachatryan 1 *, Alexander Baev, 2 Rubik Asatryan 2 1 Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803 2 Department of Chemical and Biological Engineering, University at Buffalo, SUNY, Buffalo, NY 14226 Number of pages: 7 Number of Figures: 5 Corresponding Author: Email: lkhach1@lsu.edu Telephone: +1 (225) 578-4417 Electronic Supplementary Material (ESI) for RSC Advances. This journal is © The Royal Society of Chemistry 2016