Special Offers

Ring in the new year with one of the most important reagents in your freezer!

GoldBio has been selling proven & publishedTM IPTG for 30 years, testing its product for consistent
quality and high purity. Our IPTG has been cited in thousands of peer-reviewed articles.

Now you can get even MORE HOLIDAY JOY and save 30% off select IPTG pack sizes by using the promo code:



Catalog ID Size Pricing
I2481C5 5 g $ 25.00   $ 17.50
I2481C25 25 g $ 108.00   $ 75.60
I2481C50 50 g $ 173.00   $ 121.10
I2481C100 100 g $ 329.00   $ 230.30


IPTG is an analog of galactose that is non-metabolizable and inactivates the lac repressor to induce synthesis of β-galactosidase in E. coli. The expression of cloned genes under the control of the lac operon is induced by IPTG. It is also a substrate for thigalactoside transacetylase and has been reported to induce penicillinase in bacteria.

Product Specifications

Catalog ID I2481
CAS # 367-93-1
MW 238.30 g/mol
Storage/Handling Store desiccated at -20°C. Protect from light.

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