N NHe N N O-P-O-CH2 →P-0→P-o-c 0-P-0-P-0-P-0-CH2 0-O-o c OH OH OH Deoxyadenosine.5 Deoxyadenosine-5 Deoxyadenosine-5 monophosphate(dAMP) diphosphate(dADP triphosphate(dATP