产品编号 B4252 CAS号 7240-90-6 5-Bromo-4-chloro-3-indolyl β-D-galactopyranoside 别名: 5-Bromo-4-chloro-3-indolyl β-D-galactoside BCIG X-Gal 经验分子式（希尔表示法） C14H15BrClNO6 分子量 408.63 Application X-Gal is a chromogenic substrate for β-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. assay ≥98% form powder storage temp. −20°C Appearance (Color) White to Off White Appearance (Form) Powder Solubility (Color) Colorless to Faint Yellow and Colorless to Faint Green-Yellow Solubility (Turbidity) Clear 50 mg/ml, DMF:MeOH (1:1) Carbon 40.3 - 42.0 % Nitrogen 3.1 - 3.7 % Purity (TLC) > 98 % _ Recommended Retest Period ------------------------- 3 years