(10E,12Z)-Methyl Ester 10,12-Octadecadienoic Acid is a fatty acid methyl ester is synthetically produced during the synthesis of biodiesel from Styrax confusus Hemsl oil catalyzed by a magnetic solid acid heterogeneous catalyst. (10E,12Z)-Methyl Ester 10,12-Octadecadienoic Acid is also found as a component in suet oil and as a volatile flavour compound in muscle and adipose tissue of Yanchi Tan sheep.