出典:Wiktionary
出典:『Wiktionary』 (2025/06/04 01:52 UTC 版)
menthol (countable and uncountable, plural menthols)
出典:Wikipedia
出典:『Wikipedia』 (2011/07/10 22:33 UTC 版)
Menthol is an organic compound or obtained from peppermint or other mint oils. It is a waxy, crystalline substance, clear or white in color, which is solid at room temperature and melts slightly above. The main form of menthol occurring in nature is (−)-menthol, which is assigned the (1R,2S,5R) configuration. Menthol has local anesthetic and counterirritant qualities, and it is widely used to relieve minor throat irritation. Menthol also acts as a weak kappa Opioid receptor agonist.