Abstract
            Background: Despite advancements in cancer treatments, patient survival rates have not  significantly improved due to drug resistance and side effects. Developing new anticancer drugs  is crucial to providing more options and increasing chances of recovery, ultimately improving  patient quality of life and global healthcare. We evaluated the cytotoxicity and pro-apoptosis  activity of eleven phenylacetamide derivatives.  
  Methods: The derivatives were first synthesized and characterized before being tested on  MCF7, MDA-MB468, and PC12 cell lines using the MTT assay. We also assessed their potential  anticancer effects through the TUNEL assay, caspase 3 activity testing, and real-time PCR.  
  Results: Phenylacetamide derivatives, specifically 3d derivative, are highly effective against  cancer cells by triggering apoptosis through upregulation of Bcl-2, Bax, FasL RNA expression,  and caspase 3 activity. It has shown an IC50 value of 0.6±0.08 μM against MDA-MB-468 and  PC-12 cells, while 3c and 3d also had significant cytotoxic effects against MCF-7 cells with IC50  values of 0.7±0.08 μM and 0.7±0.4 μM, respectively.  
  Conclusion: Notably, phenylacetamide derivatives have shown great promise in controlling the  growth and death of cancer cells. These derivatives have been found to possess the remarkable  ability to stimulate both internal and external apoptotic pathways, which could greatly benefit  conventional cancer treatment methods.