Linoleic acid structural formula

Write structural formulas for glycerol, stearic acid, palmitic acid, oleic acid, and linoleic acid. 

More than 500 different fatty acids have been isolated from various cells and tissues. Given in Table 19.1 are common names and structural formulas for the most abundant of them. The number of carbons in a fatty acid and the number of carbon-carbon double bonds in its hydrocarbon chain are shown by two numbers separated by a colon. In this notation, linoleic acid, for example, is designated as an 18 2 fatty acid its 18-carbon chain contains two carbon-carbon double bonds. 

Draw the structural formula of a lecithin containing one molecule each of palmitic acid and linoleic acid. 

FIGURE 13.3 Structural formula of a typical vegetable oil containing three of the most common fatty acids (oleic, linoleic, and linolenic) in canola oil, which is extracted from seeds of the rape plant (Brassica napus). 

Linoleic acid is a 18-carbon unsaturated fatty acid with two double bonds. Draw the condensed structural formula for glyceryl trilinoleate (trilinolein). 

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