Notes: Hexacosanoic acid methyl ester-d3 is intended for use as an internal standard for the quantification of hexacosanoic acid methyl ester (Item No. 26725) by GC- or LC-MS. Hexacosanoic acid methyl ester is a fatty acid methyl ester. It has been used as a standard for the detection of hexacosanoic acid (Item No. 13354) in beeswax.{48163}