1-beta-D-Arabinofuranosyluracil

White or almost white crystalline powder;

Loss on drying: ≤1.0%

Assay(HPLC): ≥99.0%

1-β-D-Arabinofuranosyluracil (ara-U) is an inactive metabolite of cytarabine.

Ara-U is formed when cytarabine undergoes deamination by cytidine deaminase.

Antiviral agent.

1-β-D-Arabinofuranosyluracil is used for the treatment of severe acute respiratory syndrome (SARS).