Ortho-Nitrophenyl-β-galactoside (ONPG) is a colorimetric and spectrophotometric substrate for detection of β-galactosidase activity. This compound is normally colorless. However, if β-galactosidase is present, it hydrolyzes the ONPG molecule into galactose and ortho-nitrophenol.
In Microbiology it is used in discs for the rapid detection of beta-galactosidase activity in microorganisms.
Biochemicals & Diagnostics
Carbohydrates and Nucleosides
Send us your enquiry for ONPG (2-Nitrophenyl-β-D-Galactopyranoside). We offer custom pack sizes at special prices. We aim to respond to your enquiry within 24 hours.
We value your input so if you have suggestions regarding new applications for ONPG (2-Nitrophenyl-β-D-Galactopyranoside) email us and we will include your contribution on the website.