4,7,8,9-Tetra-O-acetyl-N-acetyl-β-D-neuraminic Acid Methyl Ester-1g 4,7,8,9-Tetra-O-acetyl-N-acetyl-β-D-neuraminic Acid Methyl Ester Additional information Additional information Weight 0.001 kg Size 1 g For Research & Development use only. Not for testing and/or use on humans.