(2R,3S,5R)-5-(6-amino-9H-purin-9-yl)-2-(hydroxymethyl)tetrahydrofuran-3-ol-13C5;2'-Deoxyadenosine-13C5;2'-Deoxy-D-Adenosine-13C5;(2r,3s,5r)-5-(6-Amino-Purin-9-Yl)-2-Hydroxymethyl-Tetrahydro-Furan-3-Ol-13C5;9-(2'-Deoxy-Beta-D-Ribofuranosyl)Adenine-13C5;Adenine Desoxyriboside-13C5;Da-13C5;Deoxyadenosine-13C5;Deoxyadenosine-2'-13C5;Desoxyadenosine-13C5;2’-Deoxy-Adenosin-13C5;9-(2-Deoxy-Beta-D-Erythro-Pentofuranosyl)Adenine-13C5;9h-Purin-6-Amine, 9-(2-Deoxy-Beta-D-Erythro-Pentofuranosyl)--13C5;9h-Purin-6-Amine, 9-(2-Deoxy-Beta-D-Ribofuranosyl)--13C5;Adenine Deoxy Nucleoside-13C5;Adenine Deoxyribonucleoside-13C5;Adeninedeoxyribonucleoside-13C5;Adeninedeoxyribose-13C5;Adenosine, 2'-Deoxy--13C5;Adenyldeoxyriboside-13C5;Beta-D-Erythro-Pentofuranoside, Adenine-9 2-Deoxy-