5-Acetamido-4,7,8,9-tetra-O-acetyl-2-S-phenyl-2-thio-neuraminic Acid Methyl Ester-5g 5-Acetamido-4,7,8,9-tetra-O-acetyl-2-S-phenyl-2-thio-neuraminic Acid Methyl Ester Additional information Additional information Weight 0.005 kg Size 5 g