4-Methylumbelliferyl-alpha-D-Galactopyranoside

4-Methylumbelliferyl-alpha-D-galactopyranoside (4-MU-alpha-Gal) is a fluorogenic substrate of alpha-galactosidase. In addition to its use in characterizing novel alpha-galactosidases, 4-MU-alpha-Gal is used in assays to evaluate deficiency in alpha-galactosidase activity related to Fabry disease. Hydrolysis of 4-MU-alpha-Gal releases the fluorescent product 4-MU, which has an emission maximum at 445-454 nm. The excitation maximum for 4-MU is pH-dependent: 330, 370, and 385 nm at pH 4.6, 7.4, and 10.4, respectively.Formal Name: 7-(alpha-D-galactopyranosyloxy)-4-methyl-2H-1-benzopyran-2-one. CAS Number: 38597-12-5. Synonyms: 4-Methylumbelliferyl alpha-D-galactoside, MU-alpha-Gal, 4-MU-alpha-Gal. Molecular Formula: C16H18O8. Formula Weight: 338.3. Purity: >98%. Formulation: (Request formulation change), A crystalline solid. Solubility: DMF: 5 mg/ml, DMSO: 1 mg/ml. lambdamax: 213, 316 nm. SMILES: OC[C@@H]1[C@H](O)[C@H](O)[C@@H](O)[C@@H](OC2=CC=C(C(C)=CC(O3)=O)C3=C2)O1. InChi Code: InChI=1S/C16H18O8/c1-7-4-12(18)23-10-5-8(2-3-9(7)10)22-16-15(21)14(20)13(19)11(6-17)24-16/h2-5,11,13-17,19-21H,6H2,1H3/t11-,13+,14+,15-,16+/m1/s1. InChi Key: YUDPTGPSBJVHCN-CHUNWDLHSA-N.