Merck
All Photos(3)

Documents

I6758

Sigma-Aldrich

IPTG

≥99% (TLC), ≤0.1% Dioxane

Sign Into View Organizational & Contract Pricing

Synonym(s):
Isopropyl β-D-1-thiogalactopyranoside, IPTG, Isopropyl β-D-thiogalactoside
Empirical Formula (Hill Notation):
C9H18O5S
CAS Number:
Molecular Weight:
238.30
Beilstein:
4631
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.31

biological source

synthetic

Quality Level

description

non-ionic

Assay

≥99% (TLC)

form

powder

technique(s)

thin layer chromatography (TLC): suitable

impurities

≤0.1% Dioxane

color

white to off-white

useful pH range

5-7 (50 g/L)

mp

105  °C ((221 °F))

solubility

water: 0.05 g/L, clear

application(s)

cell analysis
life science and biopharma

storage temp.

2-8°C

SMILES string

CC(C)S[C@@H]1OC(CO)[C@H](O)C(O)[C@H]1O

InChI

1S/C9H18O5S/c1-4(2)15-9-8(13)7(12)6(11)5(3-10)14-9/h4-13H,3H2,1-2H3/t5-,6+,7+,8-,9+/m1/s1

InChI key

BPHPUYQFMNQIOC-NXRLNHOXSA-N

Looking for similar products? Visit Product Comparison Guide

Compare Similar Items

View Full Comparison

Show Differences

1 of 4

This Item
I5502PHG0010IPTG-RO
vibrant-m

I6758

IPTG

vibrant-m

IPTG-RO

Isopropyl-β-D-thiogalactoside

assay

≥99% (TLC)

assay

≥99% (TLC)

assay

-

assay

-

technique(s)

thin layer chromatography (TLC): suitable

technique(s)

thin layer chromatography (TLC): suitable

technique(s)

-

technique(s)

-

solubility

water: 0.05 g/L, clear

solubility

water: 50 mg/mL, clear, colorless

solubility

-

solubility

-

biological source

synthetic

biological source

-

biological source

synthetic

biological source

-

storage temp.

2-8°C

storage temp.

2-8°C

storage temp.

2-8°C

storage temp.

2-8°C

General description

Isopropyl β-D-Thiogalactopyranoside (IPTG) is a molecular biology reagent used to induce gene expression in bacterial systems. It mimics lactose, binding to the lac repressor protein, leading to gene activation. IPTG is crucial for studying gene regulation, protein expression, and recombinant protein production, providing valuable insights into cellular and molecular biology research.

Application

IPTG has been used:

  • in the induction of protein expression in Lactobacillus reuteri GroEL and mutants
  • in the induction of protein expression in Escherichia coli
IPTG is commonly used in cloning procedures that require induction of β-galactosidase activity. It is used in conjunction with X-Gal or Bluo-Gal in blue-white selection of recombinant bacterial colonies that induce expression of the lac operon in Escherichia coli. IPTG functions by binding to the lacI repressor and altering its conformation, which prevents the repression of the β-galactosidase coding gene lacZ.

Biochem/physiol Actions

IPTG is a non-metabolizable analog of allolactose. It acts as an inducer that regulates the transcriptional activity of the lac promoter, a promoter that is used for the expression of the protein in E.coli.

Other Notes

Non-metabolizable galactose analog.
For additional information on our range of Biochemicals, please complete this form.
To gain a comprehensive understanding of our extensive range of Monosaccharides for your research, we encourage you to visit our Carbohydrates Category page.

Reconstitution

A stock solution (0.1 M) is prepared by dissolving IPTG in water with subsequent sterile filtration of the solution. The final concentration of IPTG in indicator plates should be 0.2 mM.

comparable product

Product No.
Description
Pricing

Pictograms

Health hazard

Signal Word

Danger

Hazard Statements

Hazard Classifications

Carc. 1B

Storage Class Code

6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Documents related to the products that you have purchased in the past have been gathered in the Document Library for your convenience.

Visit the Document Library

Difficulty Finding Your Product Or Lot/Batch Number?

Product numbers are combined with Pack Sizes/Quantity when displayed on the website (example: T1503-25G). Please make sure you enter ONLY the product number in the Product Number field (example: T1503).

Example:

T1503
Product Number
-
25G
Pack Size/Quantity

Additional examples:

705578-5MG-PW

PL860-CGA/SHF-1EA

MMYOMAG-74K-13

1000309185

enter as 1.000309185)

Having trouble? Feel free to contact Technical Service for assistance.

Lot and Batch Numbers can be found on a product's label following the words 'Lot' or 'Batch'.

Aldrich Products

  • For a lot number such as TO09019TO, enter it as 09019TO (without the first two letters 'TO').

  • For a lot number with a filling-code such as 05427ES-021, enter it as 05427ES (without the filling-code '-021').

  • For a lot number with a filling-code such as STBB0728K9, enter it as STBB0728 without the filling-code 'K9'.

Not Finding What You Are Looking For?

In some cases, a COA may not be available online. If your search was unable to find the COA you can request one.

Request COA

Customers Also Viewed

Slide 1 of 1

1 of 1

A self-inducible heterologous protein expression system in Escherichia coli
Briand L, et al.
Scientific Reports, 6 , 33037 -33037 (2016)
Alexandre M M Dias et al.
Journal of gastroenterology, 56(5), 442-455 (2021-03-31)
We previously showed that supernatants of Lactobacillus biofilms induced an anti-inflammatory response by affecting the secretion of macrophage-derived cytokines, which was abrogated upon immunodepletion of the stress protein GroEL. We purified GroEL from L. reuteri and analysed its anti-inflammatory properties
Bin Jiang et al.
Molecular metabolism, 59, 101462-101462 (2022-03-06)
Chronic inflammatory response plays a prominent role in obesity-related nonalcoholic fatty liver disease (NAFLD). However, the intrahepatic triggering mechanism of inflammation remains obscure. This study aimed to elucidate the role of serum amyloid A1 (SAA1), an acute-phase response protein, in
Prajna Jena et al.
Nanoscale, 12(6), 3731-3749 (2020-01-30)
The actin cytoskeleton is required for the maintenance of the cell shape and viability of bacteria. It remains unknown to which extent nanoparticles (NPs) can orchestrate the mechanical instability by disrupting the cytoskeletal network in bacterial cells. Our work demonstrates
João Paulo Fabi et al.
PloS one, 9(8), e105685-e105685 (2014-08-28)
Papaya (Carica papaya L.) is a climacteric fleshy fruit that undergoes dramatic changes during ripening, most noticeably a severe pulp softening. However, little is known regarding the genetics of the cell wall metabolism in papayas. The present work describes the

Articles

General protocols for growth of competent cells and their transformation (uptake of DNA).

Protocols

General protocols for growth of competent cells in microbial medium.

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service