Substrate for ß-Glucuronidase. It is converted by the enzyme into an intense blue precipitate. It is used for the detection of the GUS gene in bacterial colonies, e.g. Escherichia coli, or for histochemical applications. For research use. Purity: =98.0% Molecular Formula: C14H12BrClNO7Na …

X-Gal is a chromogenic substrate of b-Galactosidase. It is used in conjunction with IPTG for detection of b-Galactosidase activity in bacterial colonies in a colorimetric assay to detect recombinants (white) from non-recombinants (blue). X-Gal is cleaved at the b 1-4 bond between galactose and the…