10,12-Octadecadienoyl Chloride (Mixture of Isomers) is an intermediate in the synthesis of Conjugated Linoleic Acid Ethyl Ester-d5 (Mixture of Isomers) (C685007). Conjugated Linoleic Acid Ethyl Ester-d5 is the isotope labelled analog of Conjugated Linoleic Acid Ethyl Ester (C685005); the ethyl ester derivative of Conjugated Linoleic Acid (C685000) which is a compound that has reported to exhibit anticarcinogenic activity. Also a potent antioxidant.