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69585

Sigma-Aldrich

4-Methylumbelliferyl N-acetyl-β-D-glucosaminide

suitable for fluorescence, ≥99.0% (TLC)

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Synonym(s):
4-Methylumbelliferyl-2-acetamido-2-deoxy-β-D-glucopyranoside
Empirical Formula (Hill Notation):
C18H21NO8
CAS Number:
Molecular Weight:
379.36
Beilstein:
1693397
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.32

Assay

≥99.0% (TLC)

form

powder

impurities

≤0.1% free 4-methylumbelliferone

solubility

DMF: 20 mg/mL, clear, colorless

fluorescence

λex 317 nm (pH 10.0)
λex 365 nm; λem 445 nm in aqueous buffer pH 5.0 (after cleavage by β-N-acetylglucosaminidase)

suitability

suitable for fluorescence

storage temp.

−20°C

SMILES string

[H]O[H].[H]O[H].CC(=O)N[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1Oc2ccc3C(C)=CC(=O)Oc3c2

InChI

1S/C18H21NO8.2H2O/c1-8-5-14(22)26-12-6-10(3-4-11(8)12)25-18-15(19-9(2)21)17(24)16(23)13(7-20)27-18;;/h3-6,13,15-18,20,23-24H,7H2,1-2H3,(H,19,21);2*1H2/t13-,15-,16-,17-,18-;;/m1../s1

Inchi Key

PAVCYMSNMRWMAK-DMYIEBNJSA-N

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This Item
M2133M9659M6018
form

powder

form

powder

form

powder

form

powder

solubility

DMF: 20 mg/mL, clear, colorless

solubility

DMF: 20 mg/mL, clear, colorless to faintly yellow

solubility

pyridine: 50 mg/mL, clear, colorless to faintly yellow

solubility

water: 19.60-20.40 mg/mL, clear, colorless to faintly yellow

fluorescence

λex 317 nm (pH 10.0), λex 365 nm; λem 445 nm in aqueous buffer pH 5.0 (after cleavage by β-N-acetylglucosaminidase)

fluorescence

-

fluorescence

-

fluorescence

-

suitability

suitable for fluorescence

suitability

-

suitability

-

suitability

-

storage temp.

−20°C

storage temp.

−20°C

storage temp.

−20°C

storage temp.

2-8°C

Application

4-Methylumbelliferyl N-acetyl-β-D-glucosaminide has been used as a fluorogenic substrate in the acidic chitinase activity assay. It has also been used to measure the total activity of β-N-acetylhexosaminidase (NAGase) in water sample filtrates.

Biochem/physiol Actions

4-Methylumbelliferyl-N-acetyl-β-D-glucosaminide (4-MUF-NAG) is a synthetic uncharged fluorogenic substrate for hexosaminidases. It consists of chitin monomer (N-acetyl-β-D-glucosaminide) and 4-methylumbelliferone (7-hydroxy-4-methylcoumarin) (4-MUF). 4-MUF-NAG is used for the detection and estimation of fungal growth by measuring the β-N-acetylhexosaminidase (NAGase) activity.

Other Notes

Assay of β-N-acetylhexosaminidase

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Nick Konkol et al.
Journal of microbiological methods, 80(2), 178-182 (2009-12-23)
A wide variety of cultural heritage materials are susceptible to fungal deterioration. The paper, canvas, and stone constituents of our cultural heritage are subjected to harmful physical and chemical processes as they are slowly consumed by fungi. Remediation of fungal
Population and biomarker responses of Daphnia magna towards anticholinesterase exposures
Lang Q and Li S
Cogent Biology, 5, 1616363-1616363 (2019)
R M Clegg et al.
Biochemistry, 22(20), 4797-4804 (1983-09-27)
Temperature-jump relaxation methods have been used to study the binding kinetics of fluorescent 4-methylumbelliferyl glycosides of N-acetyl-beta-D-glucosamine and its beta (1 leads to 4)-linked di- and trisaccharides with wheat germ agglutinin. The mono- and disaccharide derivatives yielded biexponential progress curves.
W He et al.
Prenatal diagnosis, 14(1), 17-22 (1994-01-01)
A new fluorogenic substrate, 4-methylumbelliferyl beta-D-glucosaminide, was used for the assay of acetyl CoA:glucosaminide N-acetyltransferase in chorionic villi, cultured villus cells, and amniocytes. Optimal conditions for the assay and the ranges of enzyme activity were established for the various types
N N Dewji et al.
The Biochemical journal, 234(1), 157-162 (1986-02-15)
beta-N-Acetylhexosaminidase I2 was purified from human liver by a combination of concanavalin A chromatography, DEAE-cellulose chromatography, gel filtration and affinity chromatography on 2-acetamido-N-(6-aminohexanoyl)-2-deoxy-beta-D-glucopyranosylamine coupled to CNBr-activated Sepharose 4B. Its specific activity was 130 mumol/min per mg of protein compared with

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