X-GAL 5-Bromo-4-chloro-3-indolyl-beta-D-galactoside, 99+%
| Catalog # | CS126 |
|---|---|
| CAS Number | 7240-90-6 |
| Formula Weight | f.w.:408.6 daltons |
| Source | Yacoo |
X-Gal is a chromogenic substrate for ?-galactosidase that produces a rich blue color that can easily be detected visually over background. X-Gal is the substrate of choice for blue-white selection of recombinant bacterial colonies with the lac+ genotype. X-Gal is used in conjunction with IPTG.
Pricing & Ordering
| Quantity | Price | Action |
|---|---|---|
| 1gm | $32.00 |
|
| 5gm + | $150.00 |
|
| 10gm + | $290.00 |
|
Articles about X-GAL
Weak blue color development in beta-galactosidase staining — what to check
If blue color develops slowly or remains faint during beta-galactosidase staining, review common causes, practical checks, and targeted reagent options to…