4-Nitrophenyl β-D-cellotrioside is a chromogenic substrate for endoglucanases and cellobiohydrolases. Hydrolysis of this substrate by these enzymes liberates 4-nitrophenol, which generates a yellow color that is measured by monitoring absorbance at 405 nm.
4-Nitrophenyl phenylphosphonate is a substrate for 5'-nucleotide phosphodiesterases. It is a more preferable substrate to 5'-nucleotide phosphodiesterases than naturally occurring nucleotides or bis(4-nitrophenyl) phosphate because of its stability, ease of synthesis, and higher rate of hydrolysis under saturating conditions.
4-Nitrophenyl β-D-cellobioside is a disaccharide and an enzyme substrate. It has been used to characterize the function of endoglucanase 1 from T. harzianum, β-glucosidase from T. xylanolyticum, and glycoside hydrolase family 3 (GH3) aryl β-glucosidases from A. oryzae.
4-Nitrophenyl palmitate serves as a colorimetric substrate for lipase and esterase, enabling the quantification of enzyme activity through the release and colorimetric detection of 4-nitrophenol at 410 nm following enzymatic hydrolysis. This compound facilitates the characterization of enzyme activity across diverse bacterial and mammalian sources, including Burkholderia and porcine pancreatic lipases.