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Purple-β-D-Gal

Purple-β-D-Gal (5-Iodo-3-indolyl-β-D-galactopyranoside) is a chromogenic substrate for β-galactosidase. Similar to X-gal, but generates a purple (λmax ~575 nm) colored precipitate on enzyme hydrolysis.

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Product Description

Purple-β-D-Gal (5-Iodo-3-indolyl-β-D-galactopyranoside) is a chromogenic substrate for β-galactosidase. Similar to X-gal, but generates a purple (λmax ~575 nm) colored precipitate on enzyme hydrolysis.

  • Off-white solid soluble in water and DMSO.
  • Store at 4°C and protect from light
  • C14H16INO6

 

References

1. Molecular Cloning: A Laboratory Manual, Cold Spring Harbor Laboratory, B. 14, p 186 (1989).

 

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    X-Gal

    X-gal (5-Bromo-4-chloro-3-indolyl-β-galactopyranoside) is the most widely used chromogenic substrate for β-galactosidase. Enzyme hydrolysis of the substrate yields a dark blue colored precipitate (maximum absorbance 615 nm).

    Red-β-D-Gal

    Red-β-D-Gal (5-Bromo-6-chloro-3-indolyl-β-D-galactopyranoside) is a chromogenic substrate for β-galactosidase. Similar to X-gal, but generates a red or magenta (λmax ~ 565 nm) colored precipitate on enzyme hydrolysis.

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    Rose-β-D-Gal (6-Chloro-3-indoxyl-β-D-galactopyranoside) is a chromogenic substrate for β-galactosidase. The product is similar to X-gal, but generates an intense pink colored precipitate (λmax ~ 540 nm) on enzymatic hydrolysis.

    Green-β-D-Gal

    Green-β-D-Gal (N-Methylindolyl-β-D-galactopyranoside) is a chromogenic substrate for β-galactosidase. Similar to X-Gal, but generates green colored precipitate on enzyme hydrolysis.