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You are here:Home » Molecular Biology » MB-Enzymes, Substrates » X-a-D-Galactoside



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A substrate for alpha-galactoside used in the selection of alpha-galactosidase positive strains of yeast and bacteria.
Catalog #X1004
AppearanceWhite, crystalline powder
Identity (NMR)Conforms to reference
Solubility (2% DMF)Colorless, clear, complete
Water (KF) 0.5%
Optical Rotation[C=1, DMF:H2O, 1:1]
140 ± 5º
CAS Number107021-38-5
Molecular FormulaC14H15BrClNO6
Molecular Weight408.6
Important NoteThis product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.
Alternate names5-Bromo-4-chloro-3-indolyl- -D-galactoside (galactopyranoside); X- -Gal;X- -galactoside

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