(Ethylenedithio)Diacetic Acid 98.0%(GC)

X-Gal is a chromogenic substrate for -galactosidase that produces a rich blue color that can easily be detected visually over background. X-Gal is the substrate of choice for blue-white selection of recombinant bacterial colonies with thelacgenotype.

For R&D use onlynot for drug household or other uses.

X-gal (also abbreviated BCIG for 5-bromo-4-chloro-3-indolyl--D-galactopyranoside) is an organic compound consisting of galactose linked to a substituted indole. The compound was synthesized by Jerome Horwitz and collaborators in Detroit MI in 1964. The formal chemical name is often shortened to less accurate but also less cumbersome phrases such as bromochloroindoxyl galactoside.