An N-sulfonyl-polyamine that acts as a potent and more specific antagonist of NMDA receptors expressed in Xenopus oocytes (IC50 = 310, 340 nM in NR1/NR2A and NR1/NR2B, respectively). The inhibition appears to be voltage-dependent and is non-competitive with respect to glutamate and glycine. Exhibits about 50-fold greater selectivity over NR1/NR2C and NR1/NR2D receptors (IC50 = 16 and 13 µM, respectively). Also shown to block c-AMP-dependent, calmodulin-activated phosphodiesterase (IC50 = 58 µM) and diminishes the induction of ornithine decarboxylase. At higher concentration (˜100 µM) it is shown to reduce spontaneous epileptiform activity in mouse cortical slices.
Biochem/physiol Actions
Primary Target NMDA
Packaging
Packaged under inert gas
Warning
Toxicity: Standard Handling (A)
Reconstitution
Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 3 months at -20°C.
Other Notes
Kirby, B.P., et al. 2005, Eur. J. Pharmacol. 524, 53. Li, J., et al. 2005, Brain Res. 1055, 180. Kirby, B. et al. 2004, Brain Res. 1011, 69. Seiler, N., et al. 1998, J. Biochem. Cell Biol. 30, 393.
Chao, J., et al. 1997, Mol. Pharm. 51, 861.
Legal Information
CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Certificates of Analysis (COA)
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