Skip to Content
Merck

573127

STAT3 Inhibitor XII, SPI

The STAT3 Inhibitor XII, SPI controls the biological activity of STAT3. This small molecule/inhibitor is primarily used for Phosphorylation & Dephosphorylation applications.

Synonym(s):

STAT3 Inhibitor XII, SPI

Sign In to View Organizational & Contract Pricing.

Select a Size

About This Item

Empirical Formula (Hill Notation):
C146H238N40O42
Molecular Weight:
3225.69
NACRES:
NA.77
UNSPSC Code:
12352200

Key Documents

View All Documentation
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist

Product Name

STAT3 Inhibitor XII, SPI, The STAT3 Inhibitor XII, SPI controls the biological activity of STAT3. This small molecule/inhibitor is primarily used for Phosphorylation & Dephosphorylation applications.

assay

≥95% (HPLC)

form

solid

manufacturer/tradename

Calbiochem®

storage condition

OK to freeze
desiccated (hygroscopic)
protect from light

color

white

solubility

water: 100 mg/mL
DMSO: 50 mg/mL

shipped in

ambient

storage temp.

2-8°C

Quality Level

100

Related Categories

Other Notes

H-Phe-Ile-Ser-Lys-Glu-Arg-Glu-Arg-Ala-Ile-Leu-Ser-Tyr-Lys-Pro-Pro-Gly-Tyr-Phe-Leu-Leu-Arg-Phe-Ser-Glu-Ser-Ser-Lys-OH
Zhao, W., et al. 2010. J. Biol. Chem.285, 35855.

Packaging

Packaged under inert gas

Physical form

Supplied as a trifluoroacetate salt.

Preparation Note

Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 6 months at -20°C.

Legal Information

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

Disclaimer

Toxicity: Standard Handling (A)

General description

A cell-permeable STAT3 SH2 domain-derived (588-615) 28-mer peptide that competitively prevents STAT3 binding to cognate pTyr peptide motif, represses STAT3 dimerization, induces apoptosis and acts as a selective constitutive STAT3 activation inhibitor in several tumor cells at 50 µM. Shown to localize in nucleus, potently block STAT3 phosphorylation, DNA-binding and transcriptional activities with minimal effect on STAT1, STAT5 and MEK signaling.
The STAT3 Inhibitor XII, SPI controls the biological activity of STAT3. This small molecule/inhibitor is primarily used for Phosphorylation & Dephosphorylation applications.

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

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?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Inga Dunsche et al.
Human molecular genetics, 32(4), 543-550 (2022-09-02)
The signal transducer and activator of transcription 3 (STAT3) has been identified as one of the cystic fibrosis (CF) modifying genes. In this study, we aimed to assess the association between STAT3 genotype and CF patient survival over several decades

Related Content

JAK/STAT Signaling Research Focus

The Janus kinase (JAK)/signal transducers and activators of transcription (STAT) signaling pathway plays an important role in cell proliferation, cell differentiation, cell migration, and cell death. It is the principal signaling mechanism for a variety of cytokines and growth factors. Constitutive activation or dysregulation of JAK/STAT signaling can result in inflammatory disease, erythrocytosis, gigantism, and leukemia.

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