“…Glycerol is a liquid polyol with a wide range of applications in the pharmaceutical industry [ 26 ]. It can be used not only as an oral or intravenous drug, but also as an excipient in pharmaceutical preparations, such as insulin, thymopentin, and freeze-dried biological drugs [ 27 , 28 ]. There are many reports on the oxidation of glycerol [ [29] , [30] , [31] , [32] ].…”