Arachidonic acid (Standard) is the standard substance of Arachidonic acid, and it is applicable for quantitative analysis, quality control, and related research in biochemical experiments. Arachidonic acid (Immunocytophyt) is a polyunsaturated omega-6 essential fatty acid that serves as a major component of biological membranes and animal phospholipids. It is synthesized from dietary linoleic acid and acts as a precursor to lipid mediators such as prostaglandins, thromboxanes, and leukotrienes. Arachidonic acid can improve cognitive responses and cardiovascular function and is commonly used to induce paw edema models.