2(1H)-Pyrimidinone, 4-amino-1-(5-O-benzoyl-beta-D-arabinofuranosyl)- 34270-10-5 4-Amino-1-(5-O-benzoyl-beta-D-arabinofuranosyl)-2(1H)-pyrimidinone Ara-C 5'-benzoate Cytarabine 5'-benzoate