(5-Bromo-4-chloro-3-indoxyl-beta-D-galactopyranoside)
Purity > 99.0 %
Molecular Biology Grade
CAS Number: |
7240-90-6
|
Chemical Formula: |
C14H15BrClNO6
|
Molecular Weight: |
408.63 g/mol
|
The substrate X-gal is metabolized by the enzyme β-galactosidase into an insoluble blue precipitate.
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How to make a 20 mg/ml X-Gal Stock Solution
1. Weigh 200 mg of X-Gal into a 15 ml polypropylene centrifuge tube.
2. Add 10 mL of Dimethylformamide (DMF). Vortex to dissolve the X-Gal.
3. Store at -20°C. Wrap the centrifuge tube in aluminum foil to protect from light.
Note: The X-Gal solution is stable for 6-12 months unless improperly handled. We recommend making 1 ml aliquot portions of the solution to minimize degradation if there will be frequent small scale use of the X-Gal solution.
Blue/White Screening of Bacterial Colonies X-Gal/IPTG Plates
View this method on protocols.io and use it directly at your bench
Acros Organics | 22777-0100 |
Acros Organics | 22777-1000 |
Acros Organics | 32724-1000 |
Alfa Aesar | B21034-MD |
Alfa Aesar | B21034-MA |
Alfa Aesar | 2264 |
Alfa Aesar | B21034-MF |
Amresco | E708-1ML |
Amresco | 0487-1G |
Amresco | N714-10ML |
Amresco | 0428-1G |
Amresco | 0487-10G |
Amresco | N714-1.5ML |
Amresco | 0428-100MG |
Amresco | 0487-100G |
Avantor | V261-01 |
Bachem | M-1190.0250 |
Bachem | M-1190.1000 |
Bachem Americas | M-1190.5000 |
EMD Millipore | 9660-1GM |
Grow Cells | MESP-5003 |
IBI Scientific | IB02265 |
MP Biomedicals | 15000190 |
Matrix Scientific | 008823-250MG |
Matrix Scientific | 008823-1G |
TCI America | B3201-1G |
TCI America | B3201-200MG |
Toronto Research Chemicals | B6823501G |
Whatman | 2260 |