In the present investigation, we isolated a steroidal saponin chemical, Cepa2, from the dry shallot roots, obtained from the Kingdom of Saudi Arabia. Using two-dimensional nuclear magnetic resonance (2D NMR) and comparison with data from the literature, the structure of the isolated Cepa2 was clarified. The cytotoxic activity of Cepa2 was then evaluated using a cell counter. Cells were allowed to settle for 24 hours before being treated with an individual concentration of, Cepa2 (3.125, 6.25, 12.5, 50,100ul). Treated cells were allowed to grow further for 48 hours. 20ul of Cell Titer 96® AQ ueous one solution Cell Proliferation Assay (Promega) were added at 37°C with a final concentration of 5 mg/ml following incubation and concentration point. For 2 hours, the 96-well plate was kept in the dark. Using a 96-well plate reader, the optical density of each treatment was calculated at an absorbance of 490 nm (Molecular Devices- SPECTRAmax- PLUS 384). The maximum inhibitory impact on the growth of the colon cancer cells was discovered at the concentration of 100ul while in vitro testing of the identified Cepa2 against colon cancer cell line. 48 hours after treatment, Cepa2's anticancer activity was highly effective, as evidenced by a decrease in cell viability. This is a brand-new study demonstrating the anticancer effects of the Cepa2 from the shallot plants, which is novel in terms of the view of drug safety and resistance. Additionally, the antimicrobial activities of the saponin extracts against Escherichia coli, Pseudomonas aeruginosa, and Staphylococcus aureus have been reported.