1-(beta-D-Ribofuranosyl)-4-amino-2-pyridone 2(1H)-Pyridinone, 4-amino-1-beta-D-ribofuranosyl- (9CI) 2(1H)-Pyridone, 4-amino-1-beta-D-ribofuranosyl- (8CI) 28307-19-9 3-Deazacytidine NSC 133115