Cat. No. 1224

2-APB C14H16BNO [524-95-8]

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Chemical Name: 2-Aminoethoxydiphenylborane

Biological Activity

A functional and membrane permeable D-myo-inositol 1,4,5-trisphosphate (IP3) receptor antagonist (IC50 = 42 μM). Stimulates store-operated calcium (SOC) release at low concentrations (< 10 μM) and inhibits it at higher concentrations (up to 50 μM). Increases STIM-Orai channel conductance and limits ion selectivity. Modulator of TRP channels; blocks TRPC1, TRPC3, TRPC5, TRPC6, TRPV6, TRPM3, TRPM7, TRPM8 and TRPP2 and at higher concentrations stimulates TRPV1, TRPV2 and TRPV3. Also blocks specific gap channel subtypes.

Technical Data

Soluble to 10 mM in ethanol with gentle warming and to 100 mM in DMSO with gentle warming
>98 %
Store at RT

The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.
All Tocris products are intended for laboratory research use only.

Certificate of Analysis / Safety Data Sheet

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Maruyama et al (1997) 2APB, 2-aminoethoxydiphenyl borate, a membrane-penetrable modulator of Ins(1,4,5)P3-induced Ca2+ release. J.Biochem. 122 498. PMID: 9348075.

Xu et al (2005) Block of TRPC5 channels by 2-aminoethoxydiphenyl borate: a differential, extracellular and voltafe-dependent effect. Br.J.Pharmacol. 145 405. PMID: 15806115.

Bai et al (2006) Block of specific gap junction channel subtypes by 2-aminoethoxydiphenyl borate (2-APB). J.Pharmacol.Exp.Ther. 319 1452. PMID: 16985167.

Togashi et al (2008) Inhibition of the transient receptor potential cation channel TRPM2 by 2-aminoethoxydiphenyl borate (2-APB). Br.J.Pharmacol. 153 1324. PMID: 18204483.

Varnai et al (2009) STIM and Orai: the long-awaited constituents of store-operated calcium entry. TiPs 30 118. PMID: 19187978.

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Keywords: 2-APB, supplier, Increases, STIM-Orai, channels, conductivity, reduces, selectivity, IP3, receptor, antagonist, TRP, modulators, Store, Operated, Calcium, Channels, Ca2+, Inositol, 145-triphosphate, Receptors, Triphosphoinositol, Transient, Receptor, Potential, PIP2, Lipids, cAMP, Signaling, Signalling, TRPC1, TRPC3, TRPC5, TRPC6, TRPV6, TRPM3, TRPM7, TRPM8, TRPP2, TRPV1, TRPV2, TRPV3, Tocris Bioscience, IP3 Receptor Antagonists

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