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Thermo Scientific™

X-Gal

Catalog number: R0404
Thermo Scientific™

X-Gal

Catalog number: R0404
Catalog Number
R0404
Unit Size
1 g
Price (USD)
Price: 287.00
Online price: 241.65
Your price:
Availability
-
Quantity
Catalog Number
Unit Size
2 x 1 g
Price (USD)
Price: 445.00
Online price: 409.65
Your price:
Availability
-
Quantity
Catalog NumberUnit SizePrice (USD)AvailabilityQuantity
R04041 g
Price: 287.00
Online price: 241.65
Your price:
-
R04022 x 1 g
Price: 445.00
Online price: 409.65
Your price:
-
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Thermo Scientific 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).

Applications

• Blue/white colony screening to distinguish recombinant (white) from non-recombinant (blue) colonies (see Reference 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 20 mg/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.

Related Products
X-Gal
X-Gal Solution, ready-to-use
For Research Use Only. Not for use in diagnostic procedures.

Specifications

Detection Method
Colorimetric
Product Type
X-Gal
Quantity
1 g
Substrate Properties
Chemical Substrate
Substrate Type
Beta-Gal Substrate, X-Gal

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