Promotional price valid on web orders only. Your contract pricing may differ. Interested in signing up for a dedicated account number?
Learn More

Thermo Scientific™ X-Gal Solution, ready-to-use
GSA_VA

Catalog No. FERR0941
Click to view available options
Quantity:
10 mL

Effectively screen colonies with X-Gal, an inert chromogenic substrate for beta-galactosidase which hydrolyzes X-Gal, forming an intense blue precipitate.

Formula: C14H15BrClNO6 Molecular weight: 408.6

X-Gal (5-bromo-4-chloro-3-indolyl-beta-D-galacto-pyranoside) is an inert chromogenic substrate for beta-galactosidase which hydrolyzes X-Gal into colorless galactose and 4-chloro-3-brom-indigo, forming an intense blue precipitate. Induction of the lacZ gene with IPTG leads to the hydrolysis of X-Gal and to the development of blue colonies (see Supporting data).

X-Gal Solution, ready-to-use, is stable, 0.22 μm membrane filtered solution formulated for direct use in conjunction with IPTG for blue/white colony screening.

Induction of the lacZ gene with IPTG leads to the hydrolysis of X-Gal and to the development of blue colonies. X-Gal Solution, ready-to-use, is a stable, 0.22μm membrane filtered solution formulated for direct use in conjunction with IPTG for blue/white colony screening.

Recommended for:

Blue/white colony screening to distinguish recombinant (white) from non-recombinant (blue) colonies (1); Visualization of beta-galactosidase reporter gene expression in transfected eukaryotic cells; Detection of beta-galactosidase activity in immunological and histochemical procedures.

Note:

Preparation of a 20mg/mL stock solution in dimethylformamide (DMF) or dimethylsulfoxide (DMSO) is recommended for X-Gal. DMF dissolves some plastic materials. The direct addition of DMF-containing solution to plastic Petri dishes should be avoided. DMF is toxic. Allow X-Gal solution containing dimethylformamide to completely dry before plating bacteria on agar plates.

This product(s) resides on a Fisher Scientific GSA or VA contract. If you are viewing this page as a nonregistered user, the price(s) displayed is List Price. To view your GSA or VA contract pricing, log in using your account number, or become a registered user by contacting one of our Customer Service teams. You can also view your contract price by searching for this item(s) on GSA Advantage. To place an order, contact Fisher Scientific Customer Service.

TRUSTED_SUSTAINABILITY

Specifications

Detection Method Colorimetric
Product Type X-Gal Solution
Quantity 10 mL
Substrate Properties Chemical Substrate
Substrate Type Beta-Gal Substrate, X-Gal
WARNING: Reproductive Harm - www.P65Warnings.ca.gov

For Research Use Only. Not for use in diagnostic procedures.

Product Content Correction

Your input is important to us. Please complete this form to provide feedback related to the content on this product.

Product Title

By clicking Submit, you acknowledge that you may be contacted by Fisher Scientific in regards to the feedback you have provided in this form. We will not share your information for any other purposes. All contact information provided shall also be maintained in accordance with our Privacy Policy.

Your feedback has been submitted: Thank you for helping us improve our website.