Supplementary data for the paper entitled: "Astrobiological Implications of the Stability and Reactivity of Peptide Nucleic Acid (PNA) in Concentrated Sulfuric Acid." Authors Janusz J. Petkowski,1,2*† Sara Seager,3,4,5,6† Maxwell D. Seager,6,7† William Bains,8 Nittert Marinus,9 Mael Poizat,9 Chad Plumet,9 Jim van Wiltenburg,9 Ton Visser,9 Martin Poelert,9 Affiliations 1 Faculty of Environmental Engineering, Wroclaw University of Science and Technology, 50-370 Wroclaw, Poland 2 JJ Scientific, Mazowieckie, Warsaw 02-792, Poland. 3 Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, 77 Massachusetts. Avenue, Cambridge, MA 02139, USA 4 Department of Physics, Massachusetts Institute of Technology, 77 Massachusetts. Avenue, Cambridge, MA 02139, USA 5 Department of Aeronautics and Astronautics, Massachusetts Institute of Technology, 77 Massachusetts. Avenue, Cambridge, MA 02139, USA 6 Nanoplanet Consulting, Concord, MA 01742, USA 7 Department of Chemistry and Biochemistry, Worcester Polytechnic Institute, Worcester, MA 01609, USA 8 School of Physics & Astronomy, Cardiff University, 4 The Parade, Cardiff CF24 3AA, UK 9 Symeres Netherlands BV, Kerkenbos 1013, 6546 BB Nijmegen, The Netherlands The contents of the file: PNA in CSA Supplementary Datasets.zipData S1: Folder "Supplementary Dataset 1-LCMS DATA" The folder Supplementary Dataset 1-LCMS DATA contains pdfs of all LCMS spectra. The original LCMS data include the LCMS analysis of PNA hexamers A-T at various time points, at room temperature (RT) (1h, 24h, 14 days; t = RT) as well as at high temperature (50°C and 80°C). Data S2: Folder "Supplementary Dataset 2-NMR DATA" The folder Supplementary Dataset 2-NMR DATA contains the original NMR data.