5-N-Acetylneuraminic acid-5-bromo-3-indolyl-alpha-ketoside 64122-65-2 BI-Neuac D-glycero-alpha-D-galacto-2-Nonulopyranosidonic acid, 5-bromo-1H-indol-3-yl 5-(acetylamino)-3,5-dideoxy-