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Promega Corporation

IPTG, Dioxane-Free

IPTG, Dioxane-Free (isopropyl-β-d-thiogalactopyranoside), is an inducer of β-galactosidase activity in many bacteria. Functioning as a lac analog, IPTG induces β-galactosidase activity by binding to and inhibiting the lac repressor. This product is used to differentiate recombinants from nonrecombinants in cloning strategies using vectors containing the lacZ or lacZ α-peptide gene.

Formula Weight: 238.31.

Form: White powder.


  • Purity: ≥99.0%.
  • Moisture: ≤1%.
  • pH (5%, H2O): 5–7.
  • Dioxane Content: ≤10ppm.

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  • *Prices valid for US customers only
Product Size Conc. Catalog # *List Price QTY Add to Cart

IPTG, Dioxane-Free

- V3955 $ 52.00 Add to cart

IPTG, Dioxane-Free

- V3951 $ 199.00 Add to cart

IPTG, Dioxane-Free

- V3953 $ 1,160.00 Add to cart

Storage Conditions

Store dry at –30°C to +10°C.

For product intended use please see Patents & Disclaimers tab.

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