X-Gal
High-purity chromogenic substrate for β-galactosidase detection and blue/white screening.
X-Gal (5-Bromo-4-chloro-3-indolyl-β-D-galactopyranoside) is a high-purity chromogenic substrate used for detecting β-galactosidase activity. When cleaved by the enzyme, it produces an insoluble blue precipitate, enabling blue/white screening of recombinant clones and β-galactosidase reporter assays.
With purity >99% confirmed by HPLC, this reagent ensures reliable performance in cloning, immunological, and histochemical applications. Supplied in powder format, it is soluble in DMF and stable under recommended storage conditions.
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Price: 48.72 €





