I-menthol colorless needle crystal or granular, soluble in alcohol; chloroform; ether; acetic acid; liquid paraffin and petroleum ether, slightly soluble in water. I-menthol（Easechem） is an important spice. L-menthol cooling effect due to its large number of used cigarettes, cosmetics, toothpaste, chewing gum, sweets and drugs, rubbed agent. I-menthol used in medicine to stimulate the drug, acting on the skin or mucous membrane, there are cool antipruritic effect; Oral drugs can be used as driving style, for headaches and nose; pharynx; laryngitis psychosis. The esters used in perfumery and medicine.