Chromogenic Substrates

<p>6-Chloro-3-indolyl b-D-cellobioside is a chromogenic substrate that produces a salmon-pink color after enzymatic cleavage. It is used for detecting the activity of beta-D-cellobiosidase in enzyme assays.</p>

<p>8-Hydroxyquinoline-beta-D-glucuronic acid, sodium salt is a fluorogenic substrate that can be used for enzymatic detection of peroxidase. The substrate is available in a variety of forms, including powder and liquid. This product has been tested for environmental and bioluminescence activity, as well as food safety. It has also been shown to be a useful ligand in immunoassays.</p>

<p>4-Nitrophenyl b-D-thiogalactopyranoside is a specialized chromogenic substrate designed for measuring the activity of thio-β-galactosidase enzymes. Upon cleavage by thio-β-galactosidase, it releases the intensely colored 4-nitrophenolate ion, providing a straightforward, sensitive, and quantitative detection method. This substrate is easily incorporated into enzyme-coupled assays, making it a reliable and convenient choice for research and diagnostic applications. With its rapid color development and high signal-to-background ratio, 4-Nitrophenyl b-D-thiogalactopyranoside is ideal for monitoring enzyme kinetics, substrate specificity evaluation, and inhibitor screening in a range of scientific and biotechnological settings.</p>

2-Chloro-4-nitrophenyl a-D-glucopyranoside is an an enzyme-activated irreversible inhibitor of alpha-glucosidase. The substrate 2-Chloro-4-nitrophenyl a-D-glucopyranoside is covalently attached to the enzyme enabling mechanistic studies of glycosidase activity, especificallyt in carbohydrate metabolism studies.

<p>Substrate detecting beta-glucosidase activity</p>

<p>6-Chloro-3-indolyl 2-acetamido-2-deoxy-b-D-glucopyranoside is a pink enzyme substrate commonly used in biochemical research and diagnostic applications. This compound is a derivative of indolyl glucopyranoside, which is known for its ability to produce a colored product upon enzymatic hydrolysis. 6-Chloro-3-indolyl 2-acetamido-2-deoxy-b-D-glucopyranoside is particularly useful for studying glycosidases, enzymes that cleave glycosidic bonds in complex carbohydrates. Its pink coloration makes it an ideal choice for colorimetric assays, enabling researchers to monitor enzyme activity in real-time and facilitating the development of new diagnostic tools and therapeutic strategies.</p>

<p>Reducing co-substrate for heme peroxidases; test reagent in microbiology</p>

<p>6-Chloro-3-indolyl 2-acetamido-2-deoxy-b-D-galactopyranoside is a chromogenic substrate for N-acetyl-beta-galactosaminidase. It produces a salmon-pink color after enzymatic cleavage.</p>

<p>5-Bromo-4-chloro-3-indoxyl-1-acetate is a chromogenic substrate used to detect the specific enzymatic activity of esterase. After cleavage, 5-bromo-4-chloro-indoxyl is released, resulting in a blue to blue-green color change in bacterial colonies or media. 5-Bromo-4-chloro-3-indoxyl-1-acetate is used in bacterial esterase activity assays (e.g. Pseudomonas spp.).</p>

<p>Chromogenic substrate for α-glucanase</p>

4-Nitrophenyl beta-D-xylobioside is a chromogenic substrate for xylanase. Upon hydrolysis, para-nitrophenol is released yielding a yellowish colour. 4-Nitrophenyl beta-D-xylobioside is used in different applications such as the Xylan degradation studies, paper/pulp industry applications

<p>Chromogenic sulfatase substrate</p>

<p>Modified naphtol AS substrate used in histochemical and cytochemical staining</p>

<p>Isopropyl-beta-D-thiogalactopyranoside (IPTG) is a non-metabolizable allolactose analogue, widely used in molecular biology for overexpression of recombinant proteins from inducible systems under the control of lac promoter. IPTG binds to the LacI repressor and causes its release from the lac operator, allowing gene expression of lac operon to take place. IPTG is present in vectors of pGEX, pGEM-T, pET, pRSET, pMAL class and others.</p>

4-Nitrophenyl-beta-L-fucopyranoside is a high-quality pNP enzyme substrate developed for the sensitive detection and quantification of Beta-L-fucosidase activity. The enzymatic hydrolysis of the substrate generates 4-nitrophenol, a yellow chromogenic component that can be conveniently measured spectrophotometrically, allowing for accurate determination of enzyme concentration and kinetics. This substrate finds applications in various research fields, diagnostics, and industrial enzyme production.

<p>Chromogenic substrate for beta-glucuronidase</p>

<p>Chromogenic substrate for α-L-Fucosidase. 2-naphthol is released upon hydrolyzation. By simultaneous coupling with a suitable staining reagent, such as hexazonium p-rosaniline, the corresponding azo-dye is formed. Naphthols can also be detected by fluorescence analysis.</p>

<p>2-Naphthyl caprylate is a substrate that is employed in an assays for carboxylesterase and lipase and when hydrolyzed, produces 2-naphthol, a compound that can also be identified via fluorescence analysis. By combining it with a diazonium salt, the formation of the corresponding azo dye occurs. In particular, this substrate is used to detect the extracellular lipase of Pseudomonas fluorescens B52.</p>

<p>2-Fluoro-4-nitrophenyl b-D-galactopyranoside is a chromogenic substrate in enzymatic assays with β-galactosidase. Commonly abbreviated as PFONPG, it is a hydrophilic compound that can be dissolved in saline and blood samples, which makes it a suitable candidate for diagnostic applications as a gene reporter probe by simple analytic methodologies. 2-Fluoro-4-nitrophenyl b-D-galactopyranoside have been used to detect and monitor the growth of prostate tumor cells.</p>

<p>2,4-Dinitrophenyl 2-deoxy-2-fluoro-β-D-glucopyranoside, sometimes referred as 2F-DNPG, is an enzyme substrate for measuring beta-glucosidase activity. It is a mechanism-based inactivator of glycosidases, including beta-glucocerebrosidase (Gcase), a lysosomal enzyme encoded by the GBA1 gene responsible for breaking down glucosylceramide into ceramide and glucose. The use of 2,4-dinitrophenyl 2-deoxy-2-fluoro-β-D-glucopyranoside as an enzyme substrate permits the study of the catalytic mechanism and reaction intermediate of these enzymes.</p>