isocholesterin

plural isocholesterins

1. countabledateduncountableDated form of isocholesterol.

   In a former communication, one of us has shown that, along with free cholesterin, compound ethers of cholesterin and of isocholesterin are found in the grease of wool.

   1875 January 15, E. Schulze, A. Urich, “On the Composition of the Fatty Matter of Wool”, in William Crookes, editor, The Chemical News and Journal of Physical Science. […], volume XXXI, number 790, London: […] the Office, […], page 26, column 2

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   In order to separate from wool grease, which consists essentially of a mixture of ethereal compounds of the cholesterins and isocholesterins with a variety of organic acids, those compounds of higher melting point and of wax-like consistency, the wool grease is dissolved in ordinary fusel oil, and the solution cooled below the melting point of the grease.

   1894 December, B. Jaffe, L. Darmstaedter, “Preparation of Wool Wax from Wool Grease”, in The Journal of the Society of Dyers and Colourists: […], volume X, number 12, Bradford, West Yorkshire: William Byles and Sons, […], page 224, column 2

   The skin is the largest organ of the human body. Some idea of the extent of its activity may be gained from the fact that from two to three million sweat glands secrete an average of two pounds of perspiration in twenty-four hours and that a similar number of sebaceous glands are engaged in the manufacture of an unestimated amount of sebum—a natural fat composed of cholesterin and isocholesterin and thus essentially akin to lanolin and the absorption bases.

   1934 July, “Facts of the Skin”, in The Drug and Cosmetic Industry, volume XXXV, number 1, Pittsfield, Mass.: Drug Markets, Inc., page 19, column 1