4-methylumbelliferyl-β-d-glucopyranoside

4-Methylumbelliferyl-β-D-Glucopyranoside (4-MU-GLU) 是β-glucosidase 的荧光底物，可用于β-glucosidase 活性的测定，期间释放出高荧光的 4-methylumbelliferyl (4-MU)，发射波长为 445-454 nm。4-MU 激发波长值与 pH 值有关，在 pH 值为 4.6、7.4 和 10.4 时分别为 330、370 和 385 nm。

4-Methylumbelliferyl-α-D-Glucopyranoside (4MU-αGlc) 是具有 pH 依赖性的 α-葡萄糖苷酶荧光底物，是法布里病和庞贝病的生物标志物，可量化婴儿血斑样本中的 α-葡萄糖苷酶活性。

Mu-6S-Palm-β-Glc is a fluorogenic substrate of palmitoyl-protein thioesterase (PPT, also known as CLN1), a lysosomal hydrolase that removes long-chain fatty acyl groups from modified cysteine residues in proteins. Mu-6S-Palm-β-Glc is cleaved by PPT CLN1 to release the fluorescent 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. This substrate is used in assays that measure PPT activity, which is commonly deficient in the neurodegenerative disorder known as infantile neuronal ceroid lipofuscinosis.

4-Methylumbelliferyl-2-acetamido-2-deoxy-β-D-glucopyranoside is a fluorogenic substrate for β-hexosaminidases. Upon enzymatic cleavage by β-hexosaminidases, 4-methylumbelliferone (4-μU) is released and its fluorescence can be used to quantify β-hexosaminidase activity. 4-MU fluorescence is pH-dependent with excitation maxima of 320 and 360 nm at low (1.97-6.72) and high pH (7.12-10.3), respectively, and an emission maximum ranging from 445 to 455 nm, increasing as pH decreases. 4-Methylumbelliferyl-2-acetamido-2-deoxy-β-D-glucopyranoside has been used to quantify β-hexosaminidase activity in serum or leukocytes from patients with GM2 gangliosidoses such as Tay-Sachs disease, which is characterized by defects in the α subunit of β-hexosaminidase.

α-D-Glucose (monohydrate) 一种在生化反应中使用的试剂。

4-Methylumbelliferyl 2-trifluoroacetyl-3,4,6-O-triacetyl-2-deoxy-β-D-glucopyranoside 一种在生化反应中使用的试剂。