A β-D-N-acetylglucosamine (GlcNAcβ) ligand equipped with an azide-functionalized linker through a short ethyl spacer. The terminal azide can be covalently coupled to alkyne partners via copper-catalyzed azide-alkyne cycloaddition (CuAAC), or to dibenzocyclooctyne (DBCO) and related strained alkynes using copper-free click chemistry, forming stable 1,2,3-triazole linkages. This compound provides a β-N-acetylglucosamine (GlcNAcβ) building block for glycoconjugate synthesis and the construction of probes for GlcNAc-recognizing proteins, including lectins and antibodies. It is also relevant to O-GlcNAc and N-glycan biosynthesis research and serves as a substrate for galactosyltransferases and other glycosyltransferases.