15-2461
Isopropyl β-D-1-thiogalactopyranoside
≥99.0%
Synonym(s):
IPTG, Isopropyl β-D-thiogalactoside
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About This Item
Empirical Formula (Hill Notation):
C9H18O5S
CAS Number:
Molecular Weight:
238.30
Beilstein/REAXYS Number:
4631
EC Number:
MDL number:
UNSPSC Code:
12352005
PubChem Substance ID:
Pricing and availability is not currently available.
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assay
≥99.0%
form
solid
availability
available only in Japan
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
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Application
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.
Other Notes
Non-metabolizable galactose analog.
Suitability
for biological purposes
Storage Class
11 - Combustible Solids
wgk_germany
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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