A Blood Group H Type III trisaccharide ligand equipped with an amine-functionalized alkyl linker. The primary amine can be covalently coupled with N-hydroxysuccinimide (NHS) activated esters to form stable amide bonds, providing a straightforward route to conjugate the ligand onto NHS-activated molecules and surfaces. This compound presents the Blood Group H Type III trisaccharide, a histo-blood group antigen variant. It is a ligand for H-antigen-recognizing lectins and a probe for blood group and host-pathogen interaction studies.