X-Gal

5-bromo-4-chloro-3-indolyl-beta-galactopyranoside

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Selected product X-Gal

X-Gal 100 mg

X-Gal 1 g

X-Gal 5 g

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X-gal is the most widely used chromogenic substrate for β-galactosidase. Enzyme hydrolysis of the substrate yields a dark blue colored precipitate (λmax ~615 nm).