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M2405

Sigma-Aldrich

4-Methylumbelliferyl β-D-lactopyranoside

β-galactosidase substrate, ≥98.00% (TLC), powder

Synonym(s):

4-Methylumbelliferyl β-D-lactoside

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About This Item

Empirical Formula (Hill Notation):
C22H28O13
CAS Number:
84325-23-5
Molecular Weight:
500.45
Beilstein:
8094402
MDL number:
MFCD00083406
UNSPSC Code:
12352204
PubChem Substance ID:
24896730
NACRES:
NA.32

product name

4-Methylumbelliferyl β-D-lactopyranoside, β-galactosidase substrate

Quality Level

200

Assay

≥98.00% (TLC)

form

powder

solubility

water: 9.80-10.20 mg/mL, clear, colorless to faintly yellow

fluorescence

λex 365 nm; λem 445 nm (after enzymatic degradation)

storage temp.

−20°C

SMILES string

CC1=CC(=O)Oc2cc(O[C@@H]3O[C@H](CO)[C@@H](O[C@@H]4O[C@H](CO)[C@H](O)[C@H](O)[C@H]4O)[C@H](O)[C@H]3O)ccc12

InChI

1S/C22H28O13/c1-8-4-14(25)32-11-5-9(2-3-10(8)11)31-21-19(30)17(28)20(13(7-24)34-21)35-22-18(29)16(27)15(26)12(6-23)33-22/h2-5,12-13,15-24,26-30H,6-7H2,1H3/t12-,13-,15+,16+,17-,18-,19-,20-,21-,22+/m1/s1

InChI key

PRTGXBPFDYMIJH-KSFLKEQHSA-N

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Application

4-Methylumbelliferyl β-D-lactopyranoside has been used as a chromophoric substrate for cellobiohydrolase I (CBHI) in T. reesei. It has also been used as a substrate for cellobiohydrolase I (Cel7A), endoglucanase I (Cel7B) and β-glucosidase from fermented samples in enzymatic assay.

Biochem/physiol Actions

4-Methylumbelliferyl β-D-lactopyranoside is a fluorescence compound hydrolyzed by the enzyme β-glucosidase (βG) and CBH1

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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M J Bailey et al.
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A low-foaming hydrophobin II deletant of the Trichoderma reesei strain Rut-C30 was used for production of cellulases by continuous cultivation on lactose medium in a laboratory fermenter. The control paradigm of the addition of new medium to the continuous process
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