Cannabidiol "a narcotic, molecular formula C21H26O2. It exists in marijuana leaves and has the activities of relieving cough, antispasmodic, analgesic, sedation and sleeping. It is a kind of hobby, which produces a sense of mental pleasure after inhalation, which can lead to habituation. Be careful when applying it. Cannabis leaves contain a variety of cannabidiol derivatives, which have been separated into more than 15 species. The more important ones are: cannabidiol, cannabidiol, tetrahydrocannabinol, cannabidiol, cannabidiol, and tetrahydrocannabinol. . The melting point of cannabidiol is 77°C, and the melting point of cannabidiol is 67°C.