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Catalog No.
Substrate for β-galactosidase,used in blue/white screening
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Substrate for β - Galactosidase which produces a rich blue color that can easily be detected visually over background. Substrate of choice for blue/white selection of recombinant bacterial colonies with the lac + genotype. dissolve in dimethylformamide (AB00450) or DMSO (AB00435) at 20mg/ml X-GAL (sizes 100mg, 250mg, 500mg, 1g) is supplied with a vial of freshly distilled DMF to ensure optimum color development store at -20°C

Product Citation

Chemical Properties

Physical AppearanceA crystalline solid
StorageStore at -20°C
Cas No.7240-90-6
Solubilityinsoluble in H2O; ≥109.4 mg/mL in DMSO; ≥3.7 mg/mL in EtOH with gentle warming and ultrasonic
Chemical Name(2S,3R,4S,5R,6R)-2-[(5-bromo-4-chloro-1H-indol-3-yl)oxy]-6-(hydroxymethyl)oxane-3,4,5-triol
SDFDownload SDF
Canonical SMILESC1=CC(=C(C2=C1NC=C2OC3C(C(C(C(O3)CO)O)O)O)Cl)Br
Shipping ConditionEvaluation sample solution: ship with blue ice. All other available sizes: ship with RT, or blue ice upon request.
General tipsFor obtaining a higher solubility, please warm the tube at 37°C and shake it in the ultrasonic bath for a while. Stock solution can be stored below -20°C for several months.

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