N-乙酰-D-半乳糖胺（GalNAc）是一种氨基糖​，是许多O-连接和N连接聚糖结构的组分。 作为UDP-GalNAc，GalNAc是许多蛋白质​糖基化丝氨酸和苏氨酸残基的起始O-连接糖。 D-N-Acetylgalactosamine 是一种内源性代谢产物。 Product Describtion: N-Acetyl-D-galactosamine (GalNAc), an aminosugar, is a component of many O-linked and N-linked glycan structures. As UDP-GalNAc, GalNAc is the intial O-linked sugar to many serine and threonine residues in protein glycosylations. D-N-Acetylgalactosamine is an endogenous metabolite. Product Application: N-Acetyl-D-galactosamine has been used: as a Dolichos biflorus agglutinin (DBA) haptenic sugar in lectin bead binding assay； to assess the specificity of lectin binding using lectin blot inhibition； in immunohistochemistry to pre-adsorb Wisteria floribunda lectin； Isotope Labelled analogue of N-Acetyl-D-galactosamine (A177000), an amino sugar derivative of galactose (G155250). N-Acetyl-D-galactosamine is the terminal carbohydrate forming the antigent of blood group A.