IPTG

Product Name: IPTG Powder Synonyms: Isopropyl β-D-Thiogalactoside CAS: 367-93-1 EINECS No.: 206-703-0 Purity: ≥99% Properties: white or white powder, dissolved in water was clear and colorless liquid Molecular formula: C9H18O5S Molecular Weight: 238.30 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. IPTG, unlike allolactose, is not hydrolyzable by β-galactosidase, its concentration therefore remains constant in an experiment. For induction, a sterile, filtered 1 M solution of IPTG is typically added by 1:1000 dilution into a logarithmically growing bacterial culture, however, different final concentration of IPTG may also be used.