12-Ketolithocholic acid is a bile acid derivative with significant applications in biochemical and pharmaceutical research. It serves as a key intermediate in the synthesis of other bile acids and steroid compounds. This compound is particularly valuable for studying metabolic pathways, liver function, and bile acid metabolism due to its structural similarity to endogenous bile acids. Its well-defined chemical properties and high purity make it suitable for use as a reference standard in analytical methods, including HPLC and mass spectrometry. Researchers also utilize 12-Ketolithocholic acid to investigate its potential role in modulating nuclear receptors, such as FXR, which are critical in lipid and glucose homeostasis.