Abstract
The F1 unsaturated fatty acids were isolated by fractional precipitation of Pb salts and Hg salts from ethanol, by fractional precipitation of Li salts from 50% ethanol, by fractional precipitation of the brominated acids from organic solvents.
The F1 unsaturated fatty acids were contained about 30% in fatty acids of cuttle-fish oil. By fractional distillation of the methyl esters, tetradecenoic (a small quantity), hexadecenoic, octadecenoic, eicosenoic, docosenoic (a small quantity) and teracosenoic (a small quantity) acids were isolated.
The structure of F1 unsaturated fatty acids were determined by ozone-oxidation of the methyl esters in CHCl3, that these acids were 9-tetradecenoic (myristoleic), 9-hexadecenoic (palmitoleic), 9-octadecenoic (oleic), 9-eicosenoic (gadoleic) and 15-tetracosenoic (selacholeic) acids.
