2-Propyl-1,3-Dioxolane-2-acetic Acid is an intermediate in synthesizing N-(Ketocaproyl)-L-homoserine Lactone (K180750), an autoinducer of P. fischeri luciferase. A specific genetic regulator that is unrelated to at least one of the enzyme systems that it induces, and it acts after excretion and accumulation in the extracellular medium.