2,7-Ahana 2,7-Anhydro-N-acetylneuraminic acid 5-(Acetylamino)-2,7-anhydro-3,5-dideoxy-D-glycero-alpha-D-galacto-2-Nonulopyranosonic acid 95574-95-1 D-glycero-alpha-D-galacto-2-Nonulopyranosonic acid, 5-(acetylamino)-2,7-anhydro-3,5-dideoxy-