[5-(2-Amino-1,6-dihydro-6-oxo-9H-purin-9-yl)-1,1-difluoropentyl]-phosphonic Acid is derived from Diethyl Difluoromethanephosphate (D444220), which is an inhibitor of bacterial phosphotriesterases and an intermediate for the synthesis of 5’-diphosphate/5’-triphosphate mimics for transcriptase and glycerol kinase inhibition.