Ertiprotafib

Modify Date: 2024-01-02 20:59:27

Ertiprotafib Structure
Ertiprotafib structure
Common Name Ertiprotafib
CAS Number 251303-04-5 Molecular Weight 559.513
Density 1.4±0.1 g/cm3 Boiling Point 690.7±55.0 °C at 760 mmHg
Molecular Formula C31H27BrO3S Melting Point N/A
MSDS N/A Flash Point 371.5±31.5 °C

 Use of Ertiprotafib


Ertiprotafib is an inhibitor of PTP1B, IkB kinase β (IKK-β), and a dual PPARα and PPARβ agonist, with an IC50 of 1.6 μM for PTP1B, 400 nM for IKK-β, an EC50 of ~1 μM for PPARα/PPARβ.

 Names

Name (2R)-2-[4-(9-bromo-2,3-dimethylbenzo[f][1]benzothiol-4-yl)-2,6-dimethylphenoxy]-3-phenylpropanoic acid
Synonym More Synonyms

 Ertiprotafib Biological Activity

Description Ertiprotafib is an inhibitor of PTP1B, IkB kinase β (IKK-β), and a dual PPARα and PPARβ agonist, with an IC50 of 1.6 μM for PTP1B, 400 nM for IKK-β, an EC50 of ~1 μM for PPARα/PPARβ.
Related Catalog
Target

PTP1B:1.6 μM (IC50)

IKK-β:400 nM (IC50)

PPARα:~1 μM (EC50)

PPARβ:~1 μM (EC50)

In Vitro Ertiprotafib is a potent inhibitor of IKK-β, with an IC50 value of 400±40 nM, which is much lower than that required for the half-maximal inhibition of the p-nitrophenyl phosphatase activity of PTP1B. The reported IC50 value of Ertiprotafib against PTP1B ranges from 1.6 to 29 μM depending on the assay conditions[2]. Ertiprotafib is at least a dual PPARα and PPARβ agonist with EC50 values for transactivation of 1 μM. Such activities readily explain the observations with suprapharmacologic doses of these[1].
In Vivo As seen with treatment of ob/ob mice, both Ertiprotafib and compound 3 seem to significantly improve glucose metabolism in rats. At 25 mg/kg/day, these compounds decrease both fasting blood glucose and insulin levels compared with vehicle treated rats. Furthermore, both Ertiprotafib and compound 3 increase glucose disposal after an oral challenge. It is noteworthy that lipid levels are also reduced in treated animals. Both triglyceride and free fatty acid levels are substantially reduced in rats treated with 25 mg/kg/day of either compound. To summarize, both Ertiprotafib and compound 3 seem to be robust agents in improving glucose utilization in fa/fa rats while also decreasing lipid levels in these animals. Decreased lipid levels may be unexpected for a pure PTP1b inhibitor. It is more telling, as mentioned above, that rats treated with suprapharmacologic doses of Ertiprotafib show signs of PPAR family activation[2].
Animal Admin Mice, Rats[2] Male Ob/ob mice and Zucker fa/fa rats are used. They are kept on a 12-h/12-h light/dark cycle and fed Rodent Diet 5001 (for mice and rats) from Purina Mills. Compounds are dosed orally by gavage in an aqueous suspension of 2% Tween 80 and 0.5% methylcellulose. Whole blood (5 μL) is used for glucose readings via tail nick for measurement using the Ascensia Elite XL glucometer and glucose strips by preloading a strip into the meter and touching the end to a small drop of blood on each tail. Insulin levels are quantified by enzyme-linked immunosorbent assay[2].
References

[1]. Shrestha S, et al. PTP1B inhibitor Ertiprotafib is also a potent inhibitor of IkappaB kinase beta (IKK-beta). Bioorg Med Chem Lett. 2007 May 15;17(10):2728-30. Epub 2007 Mar 3.

[2]. Erbe DV, et al. Ertiprotafib improves glycemic control and lowers lipids via multiple mechanisms. Mol Pharmacol. 2005 Jan;67(1):69-77.

 Chemical & Physical Properties

Density 1.4±0.1 g/cm3
Boiling Point 690.7±55.0 °C at 760 mmHg
Molecular Formula C31H27BrO3S
Molecular Weight 559.513
Flash Point 371.5±31.5 °C
Exact Mass 558.086426
PSA 74.77000
LogP 10.90
Vapour Pressure 0.0±2.3 mmHg at 25°C
Index of Refraction 1.682
Storage condition -20°C

 Synonyms

(2R)-2-[4-(9-Bromo-2,3-dimethylnaphtho[2,3-b]thiophen-4-yl)-2,6-dimethylphenoxy]-3-phenylpropanoic acid
Ertiprotafib
UNII-5TPM2EB426
PTP-112
Ertiprotafib (USAN/INN)
Benzenepropanoic acid, α-[4-(9-bromo-2,3-dimethylnaphtho[2,3-b]thien-4-yl)-2,6-dimethylphenoxy]-, (αR)-
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