Cytarabine

Cytarabine (ara-C) is a nucleoside analog and prodrug form of the DNA polymerase inhibitor ara-CTP. It is triphosphorylated to ara-CTP by the successive actions of deoxycytidine kinase, deoxycytidylate kinase, and nucleoside diphosphate kinase. Ara-C inhibits proliferation of HL-60, ML-1, Raji, and Jurkat human leukemia cell lines with IC50 values of 37, 17, 16, and 72 nM, respectively. It induces cell cycle arrest at the G0/G1 phase in HL-60 cells when used at concentrations of 2.5 and 15 µM. ara-C (75 mg/kg per day, i.p.) reduces tumor growth and increases tumor caspase-3 activity in an MOLM-13 mouse xenograft model. It also increases survival and reduces brain herpesvirus titers in infected rats when administered subcutaneously at doses of 80 and 320 mg/kg. Formulations containing ara-C have been used in the treatment of acute myeloid leukemia.Formal Name: 4-amino-1-beta-D-arabinofuranosyl-2(1H)-pyrimidinone. CAS Number: 147-94-4. Synonyms: 1-beta-D-Arabinofuranosylcytosine, NSC 63878, NSC 287459, U-19920A. Molecular Formula: C9H13N3O5. Formula Weight: 243.2. Purity: >95%. Formulation: (Request formulation change), A crystalline solid. Solubility: DMF: 0.1 mg/ml, DMSO: 0.2 mg/ml, PBS (pH 7.2): 2 mg/ml. lambdamax: 274 nm. SMILES: O[C@@H]1[C@H](N2C(N=C(N)C=C2)=O)O[C@H](CO)[C@H]1O. InChi Code: InChI=1S/C9H13N3O5/c10-5-1-2-12(9(16)11-5)8-7(15)6(14)4(3-13)17-8/h1-2,4,6-8,13-15H,3H2,(H2,10,11,16)/t4-,6-,7+,8-/m1/s1. InChi Key: UHDGCWIWMRVCDJ-CCXZUQQUSA-N.