L-Menthol

L-menthol: P-alkane-3-ol, also known as peppermint ice, terpene alcohol-[3], or menthol, is a colorless solid compound. It is formed by crystalline needle-like structures that emit a refreshing mint scent. With a relative density of d, this substance is widely recognized for its cooling properties.₁₅¹⁵The compound has a specific rotation of αD and a melting point range of 41-43℃. Its boiling point is 216℃ and 111℃ at 2.67kPa. Additionally, it has a molecular weight of 0.890.²⁰=-49.3°, refractive index nD²⁰This substance has a molecular weight of 1.4609 and is soluble in various organic solvents, such as ethanol, acetone, ether, chloroform, and benzene. However, its solubility in water is limited and it can only dissolve slightly. Its chemical properties are quite stable and it can evaporate along with steam.

Use: Menthol and racemic menthol are versatile compounds that find widespread use in various industries. As a flavoring agent, they are commonly employed in toothpaste, candy, beverages, and perfumes. They have also found application in medicine, where they act as stimulants that provide cooling relief to the skin and mucous membranes, easing itching and discomfort. In oral form, they are used to treat conditions like headaches and inflammation of the nose, throat, and airways. The esters derived from menthol are highly valued in the fields of medicine and perfumery, where they are put to use in a variety of applications.

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