Myrrh, bisabol

This sesquiterpene is a monocyclic compound, first isolated from the essential oil of Bisabol myrrh by Tucholka. It was found in oil of limes, and described by Burgess under the name limene. It occurs in several other essential oils. When separated by fractional distillation from lemon oil, Gildemeister and Mullerfound it to have the following characters —... 

Examples of monoterpenes include the linear aldehyde citral, which is found in many essential oils, and the (cis) alcohol geraniol, a major component of oil of geranium. Cyclic monoterpenes include limonene, menthol, pinene, camphor, and carvone, major components of lemon oil, mint oil, turpentine, camphor oil, and caraway oil, respectively. Sesquiterpenes include farnesol, a component of rose oil, and bisabolene, a component of Bisabol myrrh. The diterpenes include phytol, a component of chlorophyll, and vita-... 

Myrrh is an oleo-resinous substance obtained as a secretion in the parenchyma of the hark of various species of Commiphora. The so-called true myrrh, or Herabol myrrh, is collected principally in Arabia and Somaliland, whilst Bisabol myrrh, or bdellium, occurs as an admixture of true myrrh, especially when collected in Somaliland, and is identical or closely related to Indian bdellium. 

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