GKSB-002- AdvanceBio 2-AB Bovine Fetuin N-glycan library formerly ProZyme). Library composed of a mixture of sialylated N-linked glycans (core non-fucosylated), consistent with N-glycans previously reported for bovine fetuin. The biantennary glycans can have one or two of the sialic acid residues (NeuAc). The triantennary glycans can have from one to four of the sialic acid residues. The sialic acid residues are found in both α(2,3) and α(2,6) linkages. Triantennary glycans constitute ~85% of total glycans present. A small amount of penta-sialylated glycans can be detected, but their structure has not been determined. The reducing termini are derivatized with the fluorescent dye, 2-AB.