4'-Ethylpropiophenone is a synthetic chemical that belongs to the class of piperidine hydrochloride. It emits light when it reacts with inorganic acid and has a constant for its wavelength. It is synthesized by the reaction of crambidae with molybdenum, which results in the formation of hydroxyl group and chloride. The compound can be dehydrated by reacting with hydroxyl group and chloride, which leads to its formation. 4'-Ethylpropiophenone has been shown to have an effect on lepidoptera larvae, acting as an insecticide, but has not been studied for effects on humans or other mammals.