Date published: 2026-4-5

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1-Methyl-3-indolyl-β-D-galactopyranoside (CAS 207598-26-3)

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Alternate Names:
Green-β-D-gal; N-Methylindolyl-β-D-galactopyranoside
Application:
1-Methyl-3-indolyl-β-D-galactopyranoside is a chromogenic substrate for β-galactosidase
CAS Number:
207598-26-3
Molecular Weight:
309.31
Molecular Formula:
C15H19NO6
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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1-Methyl-3-indolyl-β-D-galactopyranoside is a compound of interest in biochemistry and molecular biology research, primarily due to its role as a chromogenic substrate for β-galactosidase enzyme assays. It is used in gene expression studies that involve the LacZ gene, where the activity of β-galactosidase results in a measurable color change. This colorimetric response allows for the quantification of promoter activity and the optimization of gene expression systems. Furthermore, 1-Methyl-3-indolyl-β-D-galactopyranoside is employed in the identification and characterization of bacterial colonies that possess β-galactosidase activity. Its utility extends to enzymology, where it serves as a tool for investigating the kinetics and mechanistic actions of β-galactosidase enzymes derived from various biological sources.


1-Methyl-3-indolyl-β-D-galactopyranoside (CAS 207598-26-3) References

  1. Stable Fluorescent and Enzymatic Tagging of Bradyrhizobium diazoefficiens to Analyze Host-Plant Infection and Colonization.  |  Ledermann, R., et al. 2015. Mol Plant Microbe Interact. 28: 959-67. PMID: 26035130

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

1-Methyl-3-indolyl-β-D-galactopyranoside, 25 mg

sc-220471
25 mg
$228.00

1-Methyl-3-indolyl-β-D-galactopyranoside, 100 mg

sc-220471A
100 mg
$813.00