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.
Acetone and MEK. Only one of the families of active solvents in lacquer thinner (ketones, esters and glycol ethers) is commonly available in paint stores. This is the ketone family. The two fastest evaporating ketones, acetone and methyl ethyl ketone (MEK), are usually available.