OmniPur® X-Gal - CAS 7240-90-6 - Calbiochem Chromogenic substrate used in conjunction with IPTG. Together they produce blue/white colony selection. Stock solutions X-Gal 20 mg/ml in DMF/IPTG-20 mg/ml in water. Use 4: 1 (X-Gal: IPTG). Molecular biology grade. Specifications:Assay (enzymatic): 99.0% min Blank (A 620 nm, 1 mg/ml phosphate buffer): 0.01AU max Solubility (2%, DMF): Clear, haze free Intended for laboratory and manufacturing use only. Not for drug, food, or household use. 产品信息 Form White powder Molar mass 408.63 Chemical formula C14H15BrClNO6 CAS number 7240-90-6
