Clofibrate (C12H15ClO3), CAS number 637-07-0, is an organic compound that was previously used as a lipid-lowering drug. It treats hyperlipidemia by reducing cholesterol and triglyceride levels in the blood, and was particularly commonly used in the mid-to-late 20th century. However, due to its potential side effects (such as an increased risk of gallstones with long-term use) and the emergence of safer alternatives, its clinical use has significantly decreased. It is now primarily used as a chemical reagent in research or pharmaceutical studies. This compound is a colorless to pale yellow oily liquid and should be stored in a sealed, light-protected container.