5-Bromo-4-chloro-3-indolyl β-D-glucopyranoside

5-Bromo-4-chloro-3-indolyl β-D-glucopyranoside, a chromogenic substrate for the detection of β-galactosidase activity. It is commonly used in molecular biology techniques such as gene expression analysis and reporter gene analysis. When β-galactosidase cleaves X-Gluc, a blue precipitate is produced, which can be observed by microscopy or other detection methods. X-Gluc has high sensitivity and specificity for the detection of β-galactosidase activity, making it a widely used tool in molecular biology research.