5-Acetamido-4,7,8,9-tetra-O-acetyl-2-S-(4-methylphenyl)-2-thio-β-neuraminic Acid Methyl Ester-500mg 5-Acetamido-4,7,8,9-tetra-O-acetyl-2-S-(4-methylphenyl)-2-thio-β-neuraminic Acid Methyl Ester Additional information Additional information Weight 0.0005 kg Size 500 mg