Wool-fat

The most abundant natural steroid is cholesterol. It can be obtained in large quantides from wool fat (15%) or from brain or spinal chord tissues of fat stock (2-4%) by extraction with chlorinated hydrocarbons. Its saturated side-chain can be removed by chromium trioxide oxidation, but the yield of such reactions could never be raised above 8% (see page 118f.). 

WoU-faser, /. wool fiber, -fett, n. wool fat, wool grease, -fettsaure, /. wool fat acid, -filz, m. wool felt, -gam, n. woolen yarn, -gamfett, n. wool yarn grease, -griin, n. wool green. woUig, a. woolly. 

Eye ointments are prepared in a semi-sohd base (e.g. Simple Eye Ointment BP, which consists of yellow soft paraffin, eight parts hqnid paraffin, one part wool fat, one part). The base is filtered when molten to remove particles and sterilized at 160°C for 2 hours. The drug is incorporated prior to sterilization if heat stable, or added aseptically to the sterile base. Finally, the prodnct is aseptically packed in clear sterile alumirtinm or plastic tnbes. Since the prodnct contains virtnally no water, the danger of bacteria proliferating in the ointment is neghgible. Therefore, there is no recommended maximum period during which they can be nsed. 

Dotriacontanoic Lacceric C32 0 Wool fat, plant leaf waxes... 

Menthol, camphor, or similar substances can be mixed to form a eutectic mixture, which can be absorbed onto wool fat (anhydrous lanolin), and then incorporated into the intended base. If such ingredients are not provided as mixtures, they can be dissolved in warm liquid petrolatum or vegetable oil before being incorporated into the base. 

How many grams of coal tar should be added to a mixture of 1000 g of zinc oxide paste and 500 g of wool fat to make an ointment containing 10% of coal tar ... 

It is a mixture of the sodium salts of sulphated fatty alcohols made by reducing the mixed fatty acids of coconut oil or cottonseed oil, and fish oils. Sometimes natural waxes such as spermaceti, wool fat and bees wax are sulphated directly. 

Lipophilic ointment (oil ointment) consists of a lipophilic base (paraffin oil, petroleum jelly, wool fat [lanolin]) and may contain up to 10 % powder materials, such as zinc oxide, titanium oxide, starch, or a mixture of these. Emulsifying ointments are made of paraffins and an emulsifying wax, and are miscible with water. 

The all-tra 5 -squalene (C30H50), discovered in shark liver oil in the 1920s, is a triterpene, but one in which the isoprene rule at violated in one point. Rather than a head-to-tail arrangement of six units of isoprene, there appear to be farnesyl units that have been connected tail to tail. Almost aU steroids are biosynthesized from cholesterol. Cholesterol is biosynthesized from squalene, which is first converted to lanosterol. The conversion of squalene to the steroid skeleton is an oxirane, squalene-2,3-oxide, which is transformed by enzymes into lanosterol, a steroid alcohol naturally found in wool fat. The whole process is highly stereoselective. 

Wool fat or suint.—The potash found in plants is obtained from the soil and the potash in the soil is one product of the decomposition of rocks which form the earth s crust. The potash which herbivorous animals—e.g. sheep—draw from the land is largely exuded as an oily sweat from the skin, and called, after the French, suint. In the first century of our era, Dioscorides called the mixture of wool fat and water oTowos, eesypus, a name which it retained up to the middle of the seventeenth century. CEsypus is mentioned several times by Ovid. In spite of its disagreeable smell it appears to have been used by the Boman ladies as one of their choice cosmetics. It is mentioned in N. Culpeper s Pharmacopoeia Londi-nensis (London, 1653), but it soon afterwards disappeared from the pharmacopoeia... 

Fabrics in which the Separate Threads and their Interweaving remain visible (oiled, tarred, impregnated with wool-fat or fatty adds, treated with aluminium or copper acetate or aluminium tannate, aluminium, copper, or iron soap or resinate). 

Whilst straight-chain fatty acids are the most common, branched-chain acids have been found to occur in mammalian systems, e.g. in wool fat and butter fat. They are also characteristic fatty acid constituents of the lipid part of cell walls in some... 

Unguentum Belladonnae Belladonna ointment, has the above extract 10%, diluted alcohol 5, benzoinated lard 65, and hydrous wool-fat, 20... 

Compound X, isolated from lanolin (sheep s wool fat), has the pungent aroma of dirty sweatsocks. A careful analysis showed that compound X contains 62.0% carbon and 10.4% hydrogen. No nitrogen or halogen was found. 

Wool fat Hydrogen peroxide in the Product for food or therapeutic... 

Hydrous lanolin Hydrous wool fat, Lipolan BP, JP, PhEur Melting range 38-44 °C acid value <0.8 saponification value 67-79 nonvolatile matter 72.5-77.5% iodine value 18-36 ... 

Lanolin Wool fat, purified wool fat, Corona BP, JP, PhEur, USPNF Melting range 38-44 °C loss on drying <0.25% residue on ignition <0.1% iodine value 18-36 acid value <1.0 ... 

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