17048-96-3 5-Acetamido-3,5-dideoxy-D-galactosylheptulosonic acid 5-Acetamido-3,5-dideoxygalactosylheptulosonic acid 5-Adgha L-arabino-2-Heptulosonic acid, 5-(acetylamino)-3,5-dideoxy- Sialic acid C7 analog