(2xi,3xi)-5-(Acetylamino)-2,3,5-trideoxy-2,3-di(fluoro-18F)-D-glycero-D-galacto-nononic acid 129932-88-3 2,3-di(18F)Neu5Ac D-glycero-D-galacto-Nononic acid, 5-(acetylamino)-2,3,5-trideoxy-2,3-di(fluoro-18F)-, (2xi,3xi)- N-Acetyl-2-deoxy-2,3-difluoroneuraminic acid