5-Acetamido-4,7,8,9-tetra-O-acetyl-2-S-phenyl-2-thio-β-neuraminic Acid Methyl Ester-25g 5-Acetamido-4,7,8,9-tetra-O-acetyl-2-S-phenyl-2-thio-β-neuraminic Acid Methyl Ester Additional information Additional information Weight 0.025 kg Size 25 g