Isopropyl β-D-1-thiogalactopyranoside

Isopropyl β-D-thiogalactoside, IPTG
Empirical Formula (Hill Notation):
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Quality Level

biological source


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IPTG is commonly used in cloning procedures that require induction of β-galactosidase activity. It is used in conjunction with X-Gal or Bluo-Gal in blue-white selection of recombinant bacterial colonies that induce expression of the lac operon in Escherichia coli. IPTG functions by binding to the lacI repressor and altering its conformation, which prevents the repression of the β-galactosidase coding gene lacZ.

Other Notes

Non-metabolizable galactose analog.


11 - Combustible Solids

WGK Germany


Flash Point F

Not applicable

Flash Point C

Not applicable

Certificate of Analysis

Certificate of Origin

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