Synonyms: Cytosine,1-b-D-arabinofuranosyl-, cyclic2',5'-(hydrogen phosphate) (8CI); 2,4,7-Trioxa-3-phosphabicyclo[4.2.1]nonane,2(1H)-pyrimidinone deriv.; 2',5'-Arabinosylcytidine monophosphate; 2',5'-Cyclicarabinosylcytidine monophosphate; 2',5'-Cyclic arabinosylcytosine monophosphate