Isopropyl β-D-1-thiogalactopyranoside
| Names | |
|---|---|
| IUPAC name
 Propan-2-yl 1-thio-β-D-galactopyranoside  | |
| Systematic IUPAC name
 (2R,3R,4S,5R,6S)-2-(Hydroxymethyl)-6-[(propan-2-yl)sulfanyl]oxane-3,4,5-triol  | |
| Identifiers | |
3D model (JSmol)  | 
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| ChemSpider | |
| ECHA InfoCard | 100.006.094 | 
| MeSH | Isopropyl+Thiogalactoside | 
PubChem CID  | 
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| UNII | |
CompTox Dashboard (EPA)  | 
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| Properties | |
| C9H18O5S | |
| Molar mass | 238.30 g·mol−1 | 
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). 
Infobox references  | |
Isopropyl β-d-1-thiogalactopyranoside (IPTG) is a molecular biology reagent. This compound is a molecular mimic of allolactose, a lactose metabolite that triggers transcription of the lac operon, and it is therefore used to induce protein expression where the gene is under the control of the lac operator.