α-Linolenoyl ethanolamide-d4 contains four deuterium atoms at the 1,1′,2, and 2′ positions. It is intended for use as an internal standard for the quantification of α-linolenoyl ethanolamide by GC- or LC-mass spectrometry. α-Linolenoyl ethanolamide (Item No. 90215) is an endocannabinoid containing α-linolenic acid in place of the arachidonate moiety of AEA. α-Linolenoyl ethanolamide has been detected in porcine brain, but its specific role and relative importance as a cannabinergic neurotransmitter have not been elucidated.1WARNING This product is not for human or veterinary use.