14-methyl Pentadecanoic acid methyl ester is a methylated fatty acid methyl ester that has been found in S. zeai sea sponges as the fatty acyl component of zeamide, A. indica leaf extract, and C. vulgaris and H. pluvialis microalgae. It is a major component of the vancomycin-induced biofilm produced by vancomycin-resistant S. aureus (VRSA). 14-methyl Pentadecanoic acid methyl ester has been used as a standard for the quantification of 14-methyl pentadecanoic acid in various foods by GC-MS. [Matreya, LLC. Catalog No. 1601]