CAS Registry Number

CAS 97753-82-7 — 5-Bromo-3-indolyl- beta-D-galactopyranoside (Blue gal)

5-Bromo-3-indolyl-beta-D-galactopyranoside (X-Gal) is a chromogenic substrate used in molecular biology to detect beta-galactosidase activity, producing a blue precipitate upon hydrolysis. It is widely employed in blue-white screening for recombinant DNA, lacZ reporter assays, and histochemical staining. Catalogue details: CAS 97753-82-7, molecular formula C14H16BrNO6, molecular weight 374.18 g/mol. Store at -15 to -20°C. No signal word indicated. Molekula supplies X-Gal from research to bulk quantities with full documentation and ISO 9001:2015 traceability.