Folic acid (Standard) is the standard substance of Folic acid, and it is applicable for quantitative analysis, quality control, and related research in biochemical experiments. Folic acid is an orally active essential nutrient involved in the synthesis of DNA/RNA and the production and maintenance of new cells. It exhibits antidepressant-like effects and can reduce the risk of neural tube defects in newborns. Folate deficiency can cause megaloblastic anemia, macrocytic anemia, neural tube closure defects, tumors, and aging-related diseases. Folic acid is also commonly used in research on folate deficiency-related conditions and to induce acute kidney injury models.