Cresols are a series of organic compounds derived from phenol, with one or more hydrogen atoms on the benzene ring being replaced by methyl groups. There are three primary cresols: ortho-cresol (p-cresol), meta-cresol (m-cresol), and para-cresol (o-cresol). These compounds exhibit a distinctive odor reminiscent of creosote, hence their name. Cresols find applications in various industries due to their unique chemical properties. In the pharmaceutical sector, they are used as intermediates for manufacturing certain drugs. Additionally, they play crucial roles in pesticide formulation and tanning processes. Cresols also possess disinfectant qualities, making them suitable for use in sanitizers and antiseptics. These compounds are prepared by reacting phenol with methanol in the presence of an acid catalyst or via reforming aromatic hydrocarbons. Due to their flammability and potential toxicity, safe handling practices must be strictly followed during production and application.