2,4,7,8,9-Penta-O-acetyl-N-acetylneuraminic Acid Methyl Ester-25g 2,4,7,8,9-Penta-O-acetyl-N-acetylneuraminic Acid Methyl Ester Additional information Additional information Weight 0.025 kg Size 25 g For Research & Development use only. Not for testing and/or use on humans.