cytidine , 2'-deoxycytidine , cytidine 3'-monophosphate , cytidine 5'-monophosphate , 2'-deoxycytidine 5'-monophosphate and their derivatives , of which 5,6-protons at the base moiety were replaced by deuterons , and polycytidylic acid ( poly ( c ] were employed as samples .
C0010715
cytidine
C0011485
deoxycytidine