# INVESTIGATING THE INTERSTELLAR CHEMISTRY LEADING TO SIMPLE SUGARS

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/30388

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 Title: INVESTIGATING THE INTERSTELLAR CHEMISTRY LEADING TO SIMPLE SUGARS Creators: Apponi, A. J.; Halfen, D. T.; Polt, R.; Abrell, L.; Ziurys, L. M. Issue Date: 2005 Publisher: Ohio State University Abstract: Ribose, the five-carbon sugar that composes part of the helix backbone of RNA and DNA, is thought to be formed from the formose reaction. The most difficult step in this sequence is the 1+1 addition of H$_2$CO, leading to glycolaldehyde. Yet, given the presence of formaldehyde and glycolaldehyde in interstellar space, this reaction must occur. We are investigating reaction mechanisms by radio observations of glycolaldehyde, H$_2$CO, H$_3$CO$^+$, and other related species in interstellar gas. We are also looking at the behavior of formaldehyde in the gas phase under acidic conditions using PTR-MS and MS-MS techniques. The results of these ongoing investigations will be presented. Description: Author Institution: Department of Chemistry, Department of Astronomy, and Steward Observatory, University of Arizona, Tucson, AZ, 85721 URI: http://hdl.handle.net/1811/30388 Other Identifiers: 2005-RA-11