Description
4-Methylumbelliferyl-N-acetyl-α-D-neuraminic acid is a fluorogenic substrate of neuraminidases. 4-Methylumbelliferyl-N-acetyl-α-D-neuraminic acid is cleaved by neuraminidases to release the fluorescence moiety 4-methylumbelliferyl (4-MU). 4-MU fluorescence is pH-dependent with excitation maxima of 320 and 360 nm at low (1.97-6.72) and high (7.12-10.3) pH, respectively, and an emission maximum ranging from 445 to 455 nm, increasing as pH decreases. 4-Methylumbelliferyl-N-acetyl-α-D-neuraminic acid has been used to quantify neuraminidase activity in mammalian cells and clinical isolates of influenza virus.
Chemical Properties
Off-White to Yellow Solid
Uses
(4-Methylumbelliferyl)-N-acetyl-α-D-neuraminic acid sodium salt has been used for fluorometric assay of neuraminidase as well as fluorescent staining of sialidases in PAGE.
Uses
Used as a substrate in a fluorometric assay of neuraminidase.
Biochem/physiol Actions
Substrate for fluorometric assay of neuraminidase. Used for fluorescent staining of sialidases in PAGE.
