Abstract1,3,4‐Thiadiazine‐based components have gained the attention as they afford significant intervention for cancer therapy. We aimed at assessing the in vivo antitumor activity of sodium 2‐[(4‐oxidobenzylidene) amino]‐6H‐1,3,4‐thiadiazine‐5‐c (SOTA) versus Ehrlich ascites carcinoma (EAC) cells in female mice's peritoneal cavity. An advantageous interaction of the test compound with the receptors p53 (2J1X), Caspase‐3 (3KJF), mTOR (3QAR), and PI3K (4JPS) was revealed by the docking study. The in vivo study of the test compound against EAC, equated with the EAC control mice, EAC bearing mice that received the test compound by i.p. injection proven a substantial decrease in the viability of tumor cell by 70%. Treatment with the tested compound increased total antioxidants capacity and decreasing malondialdehyde levels. Also, the apoptotic activity of the test compound was confirmed by up regulation of caspase‐3 and p53 and downregulation of PI3K and mTOR. Through the liver, kidney, and heart function assessments, the examined component has no adverse effects on either of the two organs, which were supported by a histological study. Significant positive and negative associations among variables were discovered, according to our research. Through the induction of apoptosis and antioxidant effects, the test compound show potential anticancer activity against EAC cells. The treatment with SOTA eliminated most of the pathological abnormalities brought on by EAC cells in mice, according to the results of tests on the liver, kidney, and heart as well as the histological investigation. Taking together, the tested compound SOTA is promising chemotherapeutic agent as supported by targeting PI3k/mTOR pathway.