4-Methylumbelliferyl beta-D-N,N'-diacetylchitobioside

4-Methylumbelliferyl beta-D-N,N'-diacetylchitobioside (4-?U-(GlcNAc)2) is a fluorogenic substrate for chitinases and chitobiosidases. 4-?U-(GlcNAc)2 is cleaved by chitinases and chitobiosidases to release the fluorescent moiety 4-?U. 4-?U 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.Formal Name: 7-[[2-(acetylamino)-4-O-[2-(acetylamino)-2-deoxy-beta-D-glucopyranosyl]-2-deoxy-beta-D-glucopyranosyl]oxy]-4-methyl-2H-1-benzopyran-2-one. CAS Number: 53643-12-2. Synonyms: 4-Methylumbelliferyl N,N'-diacetyl-beta-chitobioside, 4-?U-(GlcNAc)2. Molecular Formula: C26H34N2O13. Formula Weight: 582.6. Purity: >98%. Emission: 445-455 nm, increasing as pH decreases. Excitation: 320 and 360 nm at low (1.97-6.72) and high pH (7.12-10.3), respectively. Formulation: (Request formulation change), A solid. Solubility: DMF: 10 mg/ml, DMSO: 10 mg/ml. lambdamax: 317 nm. SMILES: O=C(C)N[C@H]1[C@H](OC2=CC=C(C(C)=CC(O3)=O)C3=C2)O[C@H](CO)[C@@H](O[C@]4([H])O[C@H](CO)[C@@H](O)[C@H](O)[C@H]4NC(C)=O)[C@@H]1O. InChi Code: InChI=1S/C26H34N2O13/c1-10-6-18(33)38-15-7-13(4-5-14(10)15)37-25-20(28-12(3)32)23(36)24(17(9-30)40-25)41-26-19(27-11(2)31)22(35)21(34)16(8-29)39-26/h4-7,16-17,19-26,29-30,34-36H,8-9H2,1-3H3,(H,27,31)(H,28,32)/t16-,17-,19-,20-,21-,22-,23-,24-,25-,26+/m1/s1. InChi Key: UPSFMJHZUCSEHU-JYGUBCOQSA-N.