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 

SKU: C0043 Categories: ,

Detailed information:

Advantages & Features
  • High purity: >99% by HPLC.

  • Reliable: single spot by TLC, <1% water content.

  • Proven performance in cloning and enzymatic assays.

  • Powder format: stable and soluble in DMF.

  • Versatile: molecular biology, immunology, and histology.

Specifications
  • CAS Number: 7240-90-6
  • Chemical Formula: C14H15BrClNO6
  • Molecular Weight: 408.63
  • Assay (HPLC) > 98% w/w
  • Purity (HPLC): > 99%
  • Purity (TLC): single spot
  • Water content (Karl Fischer): <1%
  • Identity (IR): conforms to structure
  • Solubility (5% w/v, DMF): soluble
Includes

– 1 g X-Gal

Download documentation
Datasheet
MSDS
Applications
  • Blue/white screening in molecular cloning.

  • β-galactosidase activity detection in reporter assays.

  • Immunological and histochemical applications.

Tables & Figures

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Quality Control
  • Purity >99% by HPLC.

  • Single spot verified by TLC.

  • Conforms to structure (IR).

Advice
  • Dissolve in DMF (5% w/v).

  • Protect from light and moisture.

Storage, Shipping & Guarantee
  • Shipped in: Gel pack.
  • Storage: -20 ºC (NON Frost-Free Freezer).
Citations
Safety Statements

This product is developed, designed and sold exclusively for Research purposes and in vitro use only (RUO). The product was not tested for use in diagnostics or for drug development, nor is it suitable for administration to humans or animals. For more info, please check its Material Safety Data Sheet available in this website.

Customers Review
FAQs

Q: What is the purity of X-Gal?
A: >99% confirmed by HPLC.

Q: How should it be prepared?
A: Dissolve in DMF to prepare stock solutions.

Q: What is the main application?
A: Blue/white colony screening in recombinant cloning.

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