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Espresso-Gal (Espresso-beta-D-galactopyranoside) is a chromogenic indicator for beta-galactosidase activity. The colorless product is cleaved by lactose-utilizing bacteria in liquid media or on agar plates and yields an espresso brown colored precipitate. Espresso-Gal can also be used as detecting agent for beta-galactosidase activity in reporter gene assays or for identification of positive transformants on agar plates when using the α-complementation approach. Read more in the Application Notes.

2-O-(4-Nitrophenyl)-a-D-N-acetylneuraminic acid, also known as p-nitrophenyl N-acetylneuraminic acid, is a chromogenic substrate specifically designed for the detection and quantification of neuraminidase (sialidase) activity. Upon cleavage by neuraminidase, it releases a yellow-colored product, 4-nitrophenol, which can be easily monitored spectrophotometrically at 405 nm. This substrate is widely used in various applications, including enzyme kinetics studies, inhibitor screening, and the determination of neuraminidase activity in biological samples such as viruses, bacteria, and cell lysates. It is particularly useful for studying the enzymatic properties of neuraminidases from different sources and for the development of novel antiviral and antibacterial agents targeting neuraminidase activity.

Naphthol AS-OL is a widely used chromogenic enzyme substrate that forms a colored product upon reaction with specific enzymes. It is commonly employed in histochemical and cytochemical staining techniques to visualize enzyme activity in cells and tissues. Naphthol AS-OL is particularly useful for detecting the presence of enzymes such as alkaline phosphatase, acid phosphatase, and esterases. The resulting colored product can be easily observed under a microscope, allowing researchers to study the distribution and localization of these enzymes in various biological samples.

Chromogenic substrate for esterase with C8 activity yielding a blue precipitate upon cleavage.

Aldol® 455 beta-D-galactopyranoside is a chromogenic substrate for the enzyme β-galactosidase. It is used to detect the activity of β-galactosidase in cell culture, and has been shown to be highly purified and of high quality. This product can be used as a ligand for receptor binding studies or as an agent in enzyme substrates in fluorescence and chemiluminescence reactions.

Chromogenic substrate for α-glucanase

3-Indoxyl phosphate p-toluidine salt is a secretor of blood group A. It is used in the detection of the presence of alkaline phosphatase in serum and other body fluids. This compound has been shown to be an isoform of 3-indoxyl phosphate with a molecular mass of about 4,000 daltons. It is also used as a substrate for gel electrophoresis and filtration experiments. The purified form of this compound has been shown to have an alkaline phosphatase activity that is ˜4 times greater than that found in human serum and intestinal extracts.

A chromogenic substrate for β-galactosidase.

Please enquire for more information about 3,4-Cyclohexenoesculetine-N-acetyl-glucosamine including the price, delivery time and more detailed product information at the technical inquiry form on this page

Chromogenic substrate for beta-glucosidase

Modified naphtol AS substrate used in histochemical and cytochemical staining

Chromogenic cephalosporin substrate for the detection of beta-lactamase activity

Bronze-Gal (Bronze-beta-D-galactopyranoside) is a chromogenic indicator for beta-galactosidase activity. The colorless product is cleaved by lactose-utilizing bacteria in liquid media or on agar plates and yields a bronze colored precipitate. Bronze-Gal can also be used as detecting agent for beta-galactosidase activity in reporter gene assays or for identification of positive transformants on agar plates when using the α-complementation approach. Read more in the Application Notes.

Please enquire for more information about 3,4-Cyclohexenoesculetine-N-acetyl-glucosamine including the price, delivery time and more detailed product information at the technical inquiry form on this page

Aldol 495 acetate is a chromogenic substrate that contains the chemical compound Aldol. It is used in food testing, diagnostics, and environmental testing. Aldol 495 acetate can be used as a ligand to detect the presence of enzymes or bacteria in culture media and diagnostics. This product has been shown to have a high purity and quality.

5-Bromo-4-chloro-3-indolyl a-L-rhamnoside is a chromogenic substrate used to detect the specific enzymatic activity of alpha-L-rhamnosidase. 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-indolyl a-L-rhamnoside is used in bacterial rhamnose metabolism studies (e.g. E. coli).