Energy flows from producers to primary consumers, to secondary consumers, to tertiary consumers... Energy is lost between trophic levels in the form of heat through cell respiration, faeces, tissue loss and death. Some of this lost energy is used by detritivores and saprotrophs.
Methanol, acetone, and isopropanol belong to the first group. These substances were detected and proposed as alcoholism indicators in connection with congener alcohol analyses of blood samples from DWIs. Methanol, in particular, has been adopted as a powerful indicator of alcohol misuse.
Cleaning. Acetone is very commonly used as a cleaner and degreaser in labs and in industry. It is also used as the active ingredient in fingernail polish removers and as the solvent for removing epoxy and cyanoacrylate (CA) adhesives from hands or other surfaces before the adhesive hardens.