IPTG (isopropyl-β-D-thiogalactopyranoside) ≥99% for molecular biology

Supplier: G Biosciences

Synonyms: (2R,3R,4S,5R,6S)-2-(Hydroxymethyl)-6-(isopropylthio)tetrahydro-2H-pyran-3,4,5-triolIPTGIsopropyl Beta-D-1-thiogalactopyranoside

RC-062EA 142 GBP
RC-062 RC-063 R036
IPTG (isopropyl-β-D-thiogalactopyranoside) ≥99% for molecular biology
IPTG (Isopropyl-β-D-thiogalactopyranoside)

IPTG is a molecular mimic of allolactose that initiates transcription of the lac operon.


  • Blue/white screening
  • Induction of lac operon for protein expression


The key feature of IPTG is that, unlike allolactose, is not hydrolyzed by ß-galactosidase, therefore its concentration remains constant during an experiment. IPTG is therefore able to induce protein expression where the gene is under the control of the lac operator, when used as an effective inducer in the concentration range of 100 μM to 1.5 mM.

Formula: C₉H₁₈O₅S
MW: 238,31 g/mol
Boiling Pt: 402 °C (1013 hPa)
Melting Pt: 109,5…110.5 °C
Storage Temperature: Freezer
MDL Number: MFCD00063273
CAS Number: 367-93-1
EINECS: 206-703-0

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