β-Neuraminic acid，N-acetyl-2-S-(4-methylphenyl)-2-thio-，menthyl ester， 4，7，8，9-tetraacetate
β-Neuraminic acid，N-acetyl-2-S-(4-methylphenyl)-2-thio-，menthyl ester， 4，7，8，9-tetraacetate
β-Neuraminic acid，N-acetyl-2-S-(4-methylphenyl)-2-thio-，menthyl ester， 4，7，8，9-tetraacetate ≥98%