Product name:Sialic acidCAS: 131-48-6Molecular Formula:C11H19NO9Molecular weight:309.27Appearance:white powderPurity:99%Storage:Avoid exposure to sunlight,Keep dryProduct description :Sialic acid is an N-acyl derivative of neuraminic acid. N-acetylneuraminic acid occurs in many polysaccharides, glycoproteins, and glycolipids in animals and bacteria.Sialic acid-rich glycoproteins (sialoglycoproteins) bind selectin in humans and other organisms. Metastatic cancer often express a high density of sialic acid-rich glycoproteins. This overexpression of sialic acid on surfaces creates a negative charge on membranes. This creates repulsion between (opposition) and helps these late-stage cancer enter the blood stream.