Irradiated solutions 4 2' deoxy 5' adenosine monophosphate 2 2'-deoxy-5'-adenosine monophosphate 2 Biological systems 2 Carbohydrate analysis 2 Carbohydrates 2 Cyano-4-hydroxycinnamic acids 2 DNA 2 Deoxyadenine Nucleotides 2 Desorption 2 Electrospray ionization mass spectrometry 2 Geometric isomer 2 Isomers 2 Mass spectrometry 2 Matrix-assisted laser desorption/ionization mass spectrometry 2 Methanolic solution 2 Molecular Structure 2 Nucleotides 2 One-pot protocol 2 Organic chemicals 2 Oxygen 2 Photosensitized reactions 2 Photosensitizers 2 Photosensitizing Agents 2 Plants (botany) 2 Pterin (PT) 2 Pterins 2 Reaction kinetics 2 Sensitive detection 2 Singlet Oxygen 2