Cytarabine is an antineoplastic medication used in the treatment of acute myeloid leukemia. However, it is essential to ensure the purity of the drug to avoid any adverse effects. Cytarabine impurities refer to any unwanted molecules or substances present in the drug that can potentially harm the patient. These impurities may arise from the manufacturing process or storage of the drug. Proper identification and quantification of these impurities are crucial to ensure the safety and efficacy of the medication.