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Aldol® 515 L-proline amide is a chromogenic and fluorogenic enzyme substrate used for detection of L-proline aminopeptidase activity. The colorless enzyme substrate is cleaved by L-proline aminopeptidase produced by microorganisms grown in liquid or solid media, yielding red-orange color. In addition, red fluorescence signals are generated when a fluorescence enhancer or a suitable matrix is present. Aldol® 515 L-proline amide is suitable for use under aerobic and anaerobic conditions.

2-Chloro-4-nitrophenyl b-D-xylobioside is a chemiluminescent substrate that is used as a diagnostic agent. It has been used in the identification of gram positive and gram negative bacteria, which are differentiated by the color of the reaction. This substrate has also been used to detect the presence of certain enzymes produced by bacteria. 2-Chloro-4-nitrophenyl b-D-xylobioside has shown to be an effective enzyme substrate for detecting bacterial growth in culture media and is often used as a fluorogenic substrate in food testing.

4-Nitrophenyl 2,3,4,6-tetra-O-acetyl-a-D-glucopyranoside is a useful substrate for enzymatic assays. This high-sensitivity chromogenic pNP substrate offers enhanced selectivity and increased detection ability, allowing for a broad range of applications in the field of glycosidase research. Featuring rapid colorimetric readouts with easily detectable endpoint determination, this substrate delivers clear and accurate results every time.

Aldol acetate is a chromogenic substrate that is used in food testing and diagnostics. Aldol acetate can be used in the detection of aminopeptidase and dipeptidyl peptidase activities, as well as in the determination of urinary proteins. Aldol acetate can also be used to detect anaerobic bacteria. This compound is conjugated with various ligands for use in immunoassays, such as beta-galactosidase, beta-glucuronidase, alpha-naphthyl phosphate ester, and phenyl phosphate ester. This product has been shown to be useful for chemiluminescent assays of DNA polymerases and reverse transcriptases in environmental samples. It has also been shown to be useful for bioluminescent assays of DNA polymerases and reverse transcriptases in environmental samples.

2-Nitrophenyl 2-acetamido-3,6-di-O-acetyl-4-O-[2-O-(2,3,4-tri-O-benzoyl-a-L-fucopyranosyl)]--2-deoxy--bDglucopyranoside is an acylated glucopyranoside that is used as a substrate for the enzyme β -galactosidase. When hydrolyzed by β -galactosidase, it yields a blue product that has been widely used in chemiluminescence and bioluminescence assays. It also can be used for staining and ligand binding studies.