4-Nitrophenyl β-D-Cellobioside

4-Nitrophenyl β-D-Cellobioside (p-Nitrophenyl β-D-cellobioside) is a cellotriose analog. 4-Nitrophenyl β-D-Cellobioside is hydrolyzed by β-glucosidases such as TxGH116 and ThCel7B. 4-Nitrophenyl β-D-Cellobioside can also be hydrolyzed by exoglucanases and endoglucanases to produce p-nitrophenol (PNP). 4-Nitrophenyl β-D-Cellobioside can be used to detect cellulase activity[31][4][5].