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4-Nitrophenyl 3,4-O-isopropylidene-a-D-galactopyranoside is a chemiluminescent substrate for detecting beta-galactosidase activity in bacteria. This product is a high purity, high quality compound that can be used as a culture media and environmental testing agent. It has been shown to be effective in diagnostics, chromogenic substrate, and enzyme substrate reactions. 4NPPG has been shown to be a fluorogenic substrate for beta-galactosidase assay and can be used as food testing agent with conjugate.

Aldol® 470 L-pyroglutamic acid amide is a chromogenic and fluorogenic enzyme substrate used for detection of pyrrolidonyl peptidase (PYRase) activity. The colorless enzyme substrate is cleaved by PYRase-producing bacteria grown in liquid or solid media, yielding orange color. In addition, green fluorescence is generated when a suitable matrix is present, such as, the surface of cellulose acetate filters, polypropylene tubes or microplates, and polyethylene vials. Aldol® 470 L-pyroglutamic acid amide is suitable for use under aerobic and anaerobic conditions.

2-Nitrophenyl laurate is a fatty acid that is not able to be degraded and has a high affinity for magnetic particles. It can be used in the immobilization of bacteria, such as Stenotrophomonas maltophilia, which are resistant to many antibiotics. 2-Nitrophenyl laurate also inhibits the enzyme lipolytic enzymes, which are responsible for the degradation of phospholipids in the cell membrane. This inhibition may lead to an increase in bacterial susceptibility to antibiotics. 2-Nitrophenyl laurate is a synthetic substrate that can be used to study the regulation of lipolytic enzymes by regulatory proteins.

4-Nitrophenyl 2,3,4,6-tetra-O-acetyl-β-D-glucopyranoside is a versatile chromogenic substrate designed for the detection and quantification of various glycosidase enzymes. This substrate is widely used in enzyme assays, producing a yellow color upon cleavage by target enzymes. The 4-Nitrophenol released in this reaction can be easily monitored spectrophotometrically, allowing for rapid and accurate enzyme analysis. This high-quality substrate provides a convenient and reliable tool for researchers in biochemistry, enzymology, and related fields.

Modified naphtol AS substrate used in histochemical and cytochemical staining

4-Nitrophenyl beta-galactoside (pNP-Gal) is a chromogenic substrate commonly used in enzymatic assays to detect and quantify the presence of beta-galactosidase. It is hydrolyzed by the enzyme to release 4-nitrophenol, which produces a yellow color that can be measured spectrophotometrically. Similarly, 4-Nitrophenyl beta-glucoside (pNP-Glc) can be used to assay beta-glucosidase activity. 4-Nitrophenyl beta-globotrioside (pNP-Glo) is a similar compound that has been designed as a substrate for glycosidases that cleave terminal beta-galactosyl-(1->3)-N-acetylgalactosamine residues. In these assays, the release of 4-nitrophenol can be measured to determine the activity of the enzyme under study. The use of chromogenic substrates like pNP-Glo allows for the rapid and reliable detection of glycosidase activity in a variety of biological samples.

4-Nitrophenyl alpha-D-maltotetraoside is a chromogenic substrate used for the detection of alpha-glucosidase and alpha-amylase activity. The four glucose units in the molecule are hydrolyzed by the enzyme, releasing 4-nitrophenol and allowing for easy colorimetric measurement of enzymatic activity

1-Naphthyl-alpha-D-mannopyranoside is a chromogenic substrate. It is used in diagnostics and as a reagent for enzymatic analysis of alpha-mannosidase activity in culture media, food testing, and environmental testing.

4-Nitrophenyl-myo-inositol-1-yl phosphate is a highly specific chromogenic substrate used for the detection, quantification, and characterization of phosphoinositide phosphatases. When cleaved by the target enzyme, it generates a highly absorbing 4-nitrophenyl moiety, producing a yellow color that can be measured spectrophotometrically. This versatile substrate is valuable in examining phosphoinositide phosphatase activity, enzyme kinetics, substrate specificity, and inhibition studies in various cellular processes, including signal transduction, lipid metabolism, and membrane trafficking.