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Merck

573125

STAT3 Inhibitor IX, Cpd188

The STAT3 Inhibitor IX, Cpd188, also referenced under CAS 823828-18-8, controls the biological activity of STAT3.

Synonym(s):

STAT3 Inhibitor IX, Cpd188, 4-((3-(Carboxymethylsulfanyl)-4-hydroxy-1-naphthyl)sulfamoyl)benzoic acid

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About This Item

Empirical Formula (Hill Notation):
C19H15NO7S2
CAS Number:
823828-18-8
Molecular Weight:
433.45
MDL number:
MFCD05804524
UNSPSC Code:
12352200
NACRES:
NA.28
Assay:
≥90% (HPLC)
Form:
solid
Quality level:
100
Storage condition:
OK to freeze
protect from light

Key Documents

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Product Name

STAT3 Inhibitor IX, Cpd188, The STAT3 Inhibitor IX, Cpd188, also referenced under CAS 823828-18-8, controls the biological activity of STAT3.

InChI key

CIERPRDYPKVDJO-UHFFFAOYSA-N

InChI

1S/C19H15NO7S2/c21-17(22)10-28-16-9-15(13-3-1-2-4-14(13)18(16)23)20-29(26,27)12-7-5-11(6-8-12)19(24)25/h1-9,20,23H,10H2,(H,21,22)(H,24,25)

SMILES string

[S](=O)(=O)(Nc2c3c(c(c(c2)SCC(=O)O)O)cccc3)c1ccc(cc1)C(=O)O

assay

≥90% (HPLC)

form

solid

manufacturer/tradename

Calbiochem®

storage condition

OK to freeze
protect from light

color

beige

solubility

DMSO: 100 mg/mL

shipped in

ambient

storage temp.

2-8°C

Quality Level

100

Disclaimer

Toxicity: Standard Handling (A)

General description

A cell-permeable naphthol compound that inhibits IL-6-stimulated STAT3 Tyr705 phosphorylation and nuclear translocation in HepG2 cells (IC50 = 73 and 39 µM, respectively) by targeting STAT3 SH2 domain peptide-binding pocket (IC50 = 20 µM against EGFR-derived pY-peptide binding), while exhibiting little effect against IFN-γ-stimulated HepG2 cellular STAT1 phosphorylation even at concentrations as high as 300 µM. Shown to preferentially induce apoptosis in cultures expressing constitutively active STAT3 (EC50 = 0.73, 3.96, and 7.01 µM in MDA-MB-468, MDA-MB-231, and MDA-MB-435 cultures, respectively), while being less effective against cells without constitutively active STAT3 (EC50 = 15.5 and 17.19 µM in MDA-MB-453 and MCF7 cultures, respectively).

Other Notes

Xu, X., et al. 2009. PLoS One4, e4783.

Packaging

Packaged under inert gas

Preparation Note

Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 3 months at -20°C.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

573125-10MG: + 573125-MG: + 573125-1.1ML:

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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’.

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