Carvacrol, or cymophenol, C6H3(CH3)(OH)C3H7, is a monoterpenoid phenol. It has a characteristic pungent, warm odor of oregano. The essential oil of thyme subspecies contains between 5% and 75% of carvacrol. Thymol (also known as 2-isopropyl-5-methylphenol, IPMP), C10H14O, is a monoterpenoid, phenol derivative of p-cymene, isomeric with carvacrol