Benzyl-o-vanillin and benzimidazole nucleus serves as an important pharmacophore in drug discovery as it have a significant medicinal importance. Thus we explored the anticancer activity of three relative compounds and found their structure activity relationship compare with 2-benzyloxy-3-methoxybenzaldehyde main structure. According to the cytotoxicity analysis, they induce cell death of leukemic cell line through DNA fragmentation. DNA binding studies reveals that the DNA binding occurs through groove region. The higher mutagenicity might cause DNA mutation through interaction with the...