(2S-(2alpha,5alpha,6beta(R*)))-5-(Acetylamino)-6-(2,3-dihydroxypropyl)tetrahydro-2-hydroxy-2H-pyran-2-carboxylic acid 117193-44-9 2H-Pyran-2-carboxylic acid, 5-(acetylamino)-6-(2,3-dihydroxypropyl)tetrahydro-2-hydroxy-, (2S-(2alpha,5alpha,6beta(R*)))- N-Acetyl-4,7-dideoxyneuraminic acid N-Addna