C18 Ganglioside GM1-d3 (d18:1/18:0-d3) is intended for use as an internal standard for the quantification of C18 ganglioside GM1. Ganglioside GM1 is a monosialylated ganglioside and the prototypic ganglioside for those containing one sialic acid residue.1,2 C18 Ganglioside GM1 is found in the brain, primarily in the piriform cortex, amygdala nucleus, striatum, and hippocampal CA1 region.3 The ratio of C18 ganglioside GM1 (d20:1/18:0) to C18 ganglioside GM1 is decreased in the outer molecular layer of the hippocampal dentate gyrus in postmortem tissue from patients with Alzheimer’s disease.4 As this product is derived from a natural source, there may be variations in the sphingoid backbone. [Matreya, LLC. Catalog No. 2050]WARNING This product is not for human or veterinary use.