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Product Details

2-APB | TRP activator

2-APB (524-95-8) is an IP3 receptor antagonist (IC50=42 μM).1 Inhibits store-operated Ca2+ channels at high concentrations (50 μM) but stimulates at low concs. (<10 μM).2 Modulates TRP channels, blocking TRPC1, TRPC3, TRPC5, TRPC6, TRPV6, TRPM3, TRPM7, TRPM8, TRPP2 and at higher concentrations, activating TRPV1, TRPV2, TRPV3.3,4 Also inhibits selected GAP junction subtypes.5


1) 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
2) Varnai et al. (2009) STIM and Orai: the long-awaited constituents of store-operated calcium entry; Trends Pharmacol. Sci., 30 118
3) Togashi et al. (2008) Inhibition of the transient receptor potential cation channel TRPM2 by 2-aminoethoxydiphenyl borate (2-APB); Br. J. Pharmacol., 153 1324
4) Xu et al. (2005) Block of TRPC5 channels by 2-aminoethoxydiphenyl borate: a differential, extracellular and voltage-dependent effect; Br. J. Pharmacol., 145 405
5) Bai et al. (2006) Block of specific gap junction channel subtypes by 2-aminoethoxydiphenyl borate (2-APB); J. Pharmacol. Exp. Ther., 319 1452

Focus Biomolecules cell signaling reagent supplier, chemical structure of 2-APB | TRP activator | CAS 524-95-8

Catalog#  10-1212

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Catalog Number:
TRP activator
Chemical Name:
2-Aminoethoxydiphenyl borate
Molecular Weight:
Molecular Formula:
Soluble in DMSO (up to 20 mg/ml) or in Ethanol (up to 5 mg/ml).
Physical Properties:
White solid
98% by TLC
NMR (Conforms)
Storage Temperature:
-20°C (des.)
Stable for 1 year as supplied. Solutions in DMSO or ethanol may be stored at -20°C for up to 2 months.
Shipping Code:
Materials provided by Focus Biomolecules are for laboratory research use only and are not intended for human or veterinary applications.

Focus BiomoleculesPlymouth Meeting, PA USA1-855-FOCUS21

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