3-Chloro-1,2-dihydroisoquinolin-1-one is a chemical compound that belongs to the group of ginsenoside compounds. It is a fluorescent and cyclopentyl skeleton that has been proven to be chemically stable in vitro studies. 3-Chloro-1,2-dihydroisoquinolin-1-one has also been shown to have anti-aging properties and can be used for treatments that involve temperatures of up to 45°C. This compound is insoluble in water but soluble in organic solvents. The structure of this molecule has been sequenced and is present in the form of ginsenoside rg1, which is found in Panax ginseng roots.