 The Robinsons identified the location of the double bond in, and also synthesized, oleic acid.The Robinsons’ Synthesis of Oleic Acid
Lactarinic Acid, isolated from fungi of the Lactarius genus, was shown to contain a ketostearic acid.The Robinsons showed that this was in fact 6-ketostearic acid by doing a Beckmann Transformation  on the oxime of lactarinic acid.