210418-02-3, 2-O-(4-Nitrophenyl)-a-D-N-acetylneuraminic acid ammonium salt, CAS:210418-02-3

13264-91-0, 2-O-(4-Nitrophenyl)-a-D-N-acetylneuraminic acid ammonium salt, CAS:13264-91-0

157707-92-1, 2-O-(2-Nitrophenyl)-a-D-N-acetylneuraminic acid, CAS:157707-92-1

26112-88-9,2-O-(p-Nitrophenyl)-α-D-N-acetylneuraminic acid,CAS:26112-88-9

76204-02-9, 4-Methylumbelliferyl N-acetyl-a-D-neuraminic acid sodium salt, CAS:76204-02-9

160369-85-7 ,5-Bromo-4-chloro-3-indolyl a-D-N-acetylneuraminic acid sodium salt,CAS:160369-85-7

123549-14-4 , Neu5Ac-a-PNP.Na; 2-O-(4-Nitrophenyl)-a-D-N-acetylneuraminic acid sodium salt