Notes: Oleic acid-hydroxy oleoyl leucine-d7 is intended for use as an internal standard for the quantification of oleic acid-hydroxy oleoyl leucine by GC- or LC-MS. Oleic acid-hydroxy oleoyl leucine is a very long-chain fatty acid composed of oleic acid (Item Nos. 90260 / 24659) connected to hydroxy oleoyl leucine.{66613}