Clofibric acid
Clofibric acid is a herbicide with the IUPAC name 2--2-methylpropanoic acid and molecular formula C10H11ClO3. It functions as a plant growth regulator against the plant hormone auxin. Clofibric acid is also a naturally-occurring pharmaceutical compound, having been found in Swiss lakes and the North Sea.
Clofibric acid is a metabolite of the cholesterol-lowering pharmaceutical drug clofibrate, as well as that of the lipid regulators clofibrate, etofibrate, and theofibrate.
Clofibric acid derivatives include etofibrate, pirifibrate, and picafibrate.