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The two crystal forms for racemic menthol have melting points of 28 °C and 38 °C. Pure (−)-menthol has four crystal forms, of which the most stable is the α form, the familiar broad needles. Pure (−)-menthol has four crystal forms, of which the most stable is the α form, the familiar broad needles.
Zheng Gu Shui (Chinese: 正骨水; lit. 'bone-setting liquid') is a traditional Chinese liniment.This external analgesic is believed to relieve qi and blood stagnation, promote healing, and soothe pain.
He blended menthol into petroleum jelly, at first calling it Richardson's Croup and Pneumonia Cure Salve, later changing the name to Vicks VapoRub. It was named after Richardson's brother-in-law, Joshua Vick, a physician who had arranged for Richardson to have access to a laboratory to create the product.
Crystals and gemstones have long been used for their protective and cleansing properties. With so many options available, it can be overwhelming to know which crystals for protection are the most ...
Menthone is structurally related to menthol, which has a secondary alcohol (>C-OH) in place of the carbon-oxygen double bond (carbonyl group) projecting from the cyclohexane ring. Menthone is obtained for commercial use after purifying essential oils pressed from Mentha species (peppermint and corn mint). [4]
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