9 (Z),11 (E),13 (Z) -Octadecatrienoic Acid methyl ester

9 (Z),11 (E),13 (Z) -Octadecatrienoic acid methyl ester, an isomer of 9 (Z),11 (E),13 (E) -octadecatrienoic acid methyl ester and the methyl ester derivative of 9 (Z),11 (E),13 (Z) -octadecatrienoic acid, serves as a standard for quantifying 9 (Z),11 (E),13 (Z) -octadecatrienoic acid in wild growing pomegranate (P. granatum) seed oil [Matreya, LLC. Catalog No. 1240].