A antigen hexaose type 2;Blood group A hexasaccharide type II;Blood group A antigen hexaose type 2 (>90% NMR);Blood group A antigen hexaose type 2 grafted on BSA;Blood group A antigen hexaose type 2 grafted on HSA;Blood group A antigen hexaose type 2 grafted on KLH;Blood group A antigen hexaose type 2 grafted on OVA;Blood group A antigen hexaose type 2 grafted on CRM197;Blood group A antigen hexaose type 2 with DBCO (Linker-DBCO A);Blood group A antigen hexaose type 2 linked to biotin (Linker-BT C)