3-Fluoro-N-acetylneuraminic acid 3-Fluoro-neuac 5-Acetamido-3,5-dideoxy-3-fluoro-D-erythro-L-gluco(or D-erythro-L-manno)-nonulosonic acid 5-Acetamido-5-deoxy-3-fluoro-D-erythro-L-gluco-2-nonulopyranosonic acid 921-40-4 D-erythro-L-gluco(or D-erythro-L-manno)-Nonulosonic acid, 5-acetamido-3,5-dideoxy-3-fluoro-