5(Z),8(Z)-Tetradecadienoic acid-d11 is intended for use as an internal standard for the quantification of 5(Z),8(Z)-tetradecadienoic acid by GC- or LC-MS. 5(Z),8(Z)-Tetradecadienoic acid is an ω-6 polyunsaturated fatty acid (PUFA).WARNING This product is not for human or veterinary use.