15-Hydroxypentadecanoic acid is suitable reagent used in the following studies:As an internal standard in the quantification of formation of 11-hydroxylauric acid by gas chromatography.In the synthesis of [16-14C]16DCA (DCA= dicarboxylic acid) by one-carbon elongation procedure at C15.As an internal standard for the normalization of intensities in the mass spectra of plant cutin polymer.It may be used in the synthesis of 5-pentadecanolide on dealuminated HY zeoliteand also fatty acid analog of podophyllotoxin.