Disclosed is a compound, prepared by extracting and separating from Limax. Also disclosed is a method for extracting and separating the compound, which is simple and easy to operate. The compound has sedative and hypnotic effects, and has significant effects on physiological or psychological dependent detoxification or detoxication. It has potential application value for preparing detoxification or detoxication drugs, and provides new ideas for the further development of detoxification drugs.