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N4264

Sigma-Aldrich

4-Nitrophenyl N-acetyl-α-D-galactosaminide

galactosaminide substrate, ≥98% (TLC), powder

Synonym(s):

p-Nitrophenyl 2-acetamido-2-deoxy-α-D-galactopyranoside

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About This Item

Empirical Formula (Hill Notation):
C14H18N2O8
CAS Number:
23646-68-6
Molecular Weight:
342.30
EC Number:
245-802-3
MDL number:
MFCD00065476
UNSPSC Code:
12352204
PubChem Substance ID:
24897699
NACRES:
NA.32

product name

4-Nitrophenyl N-acetyl-α-D-galactosaminide, substrate for N-acetyl-α-D-galactosaminidase

Assay

≥98% (TLC)

form

powder

solubility

DMF: 25 mg/mL, clear, colorless to faintly yellow

storage temp.

−20°C

SMILES string

CC(=O)N[C@@H]1[C@@H](O)[C@@H](O)[C@@H](CO)O[C@@H]1Oc2ccc(cc2)[N+]([O-])=O

InChI

1S/C14H18N2O8/c1-7(18)15-11-13(20)12(19)10(6-17)24-14(11)23-9-4-2-8(3-5-9)16(21)22/h2-5,10-14,17,19-20H,6H2,1H3,(H,15,18)/t10-,11-,12+,13-,14+/m1/s1

InChI key

OMRLTNCLYHKQCK-RGDJUOJXSA-N

Biochem/physiol Actions

4-Nitrophenyl N-acetyl-α-D-galactosaminide serves as a chromogenic synthetic substrate for lysosomal enzyme α-N-acetylgalactosaminidase to perform enzyme assays. Upon cleavage the substrate forms a yellow color solution of p-nitrophenol that can be measured at 400nm at pH 10.6.

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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Simon P J Albracht et al.
BBA clinical, 8, 84-89 (2017-10-25)
This paper presents a new assay to determine the activity of the lysosomal enzyme α-N-acetylgalactosaminidase (Naga, EC 3.2.1.49) in human serum. It is based on the use of a new chromogenic substrate, DNP-α-GalNAc (2,4-dinitrophenyl-N-acetyl-α-D-galactosaminide) and is performed at pH 4.3 and
Jeffrey B Kaplan et al.
Journal of bacteriology, 185(16), 4693-4698 (2003-08-05)
When cultured in broth, fresh clinical isolates of the gram-negative periodontal pathogen Actinobacillus actinomycetemcomitans form tenaciously adherent biofilm colonies on surfaces such as plastic and glass. These biofilm colonies release adherent cells into the medium, and the released cells can
R D Roer et al.
Comparative biochemistry and physiology. Part B, Biochemistry & molecular biology, 128(4), 683-690 (2001-04-06)
We have previously demonstrated a marked change in sugar moieties of glycoproteins of the cuticle of the blue crab, Callinectes sapidus, between 0.5 and 3 h post-ecdysis. The present study has identified a glycosidase that appears in the cuticle during
S Singh et al.
Carbohydrate research, 305(3-4), 363-370 (1998-07-02)
The beta-N-acetylhexosaminidase from Aspergillus oryzae catalysed the transfer of beta-D-N-acetylgalactosaminyl residues from p-nitrophenyl beta-D-N-acetylglucosaminide on to disaccharide acceptors consisting of thioethyl glycosides of alpha-D-Glc-(1-->4)-beta-D-Glc, beta-D-Glc-(1-->4)-beta-D-Glc and beta-D-Glc-(1-->6)-beta-D-Glc. The principle of 'anomeric control' was exemplified by the results which showed that
O Habuchi et al.
The Journal of biological chemistry, 260(24), 13102-13108 (1985-10-25)
Chick embryo chondrocyte microsomes containing intact Golgi vesicles took up 3'-phosphoadenosine-5'-phospho[35S]sulfate ([35S]PAPS) in a time- and temperature-dependent, substrate-saturable manner. When [35S]PAPS and p-nitrophenyl-N-acetyl-beta-D-galactosaminide (pNP-GalNAc) were added to the incubation in the absence of detergent, the microsomes catalyzed the transfer of
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