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  • 648490 - TRPC3 Channel Inhibitor, Pyr3 - CAS 1160514-60-2 - Calbiochem

648490 Sigma-Aldrich

TRPC3 Channel Inhibitor, Pyr3 - CAS 1160514-60-2 - Calbiochem

The TRPC3 Channel Inhibitor, Pyr3, also referenced under CAS 1160514-60-2, controls the biological activity of TRPC3 Channel. This small molecule/inhibitor is primarily used for Protease Inhibitors applications.

Synonym: Ethyl-1-(4-(2,3,3-trichloroacrylamide)phenyl)-5-(trifluoromethyl)-1H-pyrazole-4-carboxylate, SB-360475, CRAC Channel Inhibitor II, TRPC3 Channel Inhibitor, Pyr3 - CAS 1160514-60-2 - Calbiochem

  • CAS Number 1160514-60-2

  • Empirical Formula (Hill Notation) C16H11Cl3F3N3O3

  • Molecular Weight 456.63



Quality Level   100
assay   ≥95% (HPLC)
form   solid
mfr. no.   Calbiochem®
storage condition   OK to freeze
  protect from light
storage conditions   +2C to +8C
color   dark brown
solubility   DMSO: 100 mg/mL
  ethanol: 25 mg/mL
shipped in   ambient


General description

A cell-permeable pyrazole that acts as an equally potent blocker of Stim1 and Orai1-coupled CRAC (Ca2+ release-activated Ca2+) channel-mediated SOCE (store-operated Ca2+ entry) in RBL-2H3 cells (IC50 = 540 nM by Fura-2; peak current density pA/pF = -1.45 and -7.50, respectively, with or without 3 µM BTP2/Pyr3 by whole cell clamp) and the transient receptor potential cation channel TRPC3-mediated ROCE (receptor-operated Ca2+ entry) in TRPC3-expressing HEK293 cells (IC50 = 540 nM; by Fura-2; pA/pF = -2.27 and -18.50, respectively, with or without 3 µM BTP2/Pyr3). Pyr3 is also demonstrated to alleviate pressure overload-induced cardiac hypertrophy following TAC (transverse aortic constriction) operation in mice (0.1 mg/kg/day via i.p. osmotic pump) in vivo. A great complement to Pyr 2 (Cat. No. 203890), Pyr6, and Pyr10 in Ca2+ signaling studies.


10 mg in Plastic ampoule

Packaged under inert gas


Toxicity: Standard Handling (A)


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

Other Notes

Schleifier, H., et al. 2012. Br J PharmacolIn Press
Kiyonaka, S., et al. 2009. Proc. Natl. Acad. Sci. USA106, 5400.

Legal Information

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

Safety & Documentation

Safety Information

WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable
Protocols & Articles
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