X-Α-Gal is a professionally supplied chemical reagent, with a molecular formula of C14H15BrClNO6 and a molecular weight of 408.63. This compound belongs to the class of organic compounds containing bromine, chlorine, nitrogen, oxygen, and carbon. It serves as a chromogenic substrate for α-galactosidase (melibiase), an enzyme essential for the metabolism of melibiose as a carbon source. The reagent carries a warning signal word due to its potential acute toxicity when ingested. X-Α-Gal is commonly used in biochemistry, particularly for the selection of positive clones in yeast two-hybrid screens.

• CAS Number: 107021-38-5
• Molecular Formula: C14H15BrClNO6
• Exact Mass: 406.97713
• GHS Signal Word: Warning
• Molecular Weight: 408.63
• Hazard Statements:
• H302: Harmful if swallowed [Warning Acute toxicity, oral]