|A 987306 Catalog No.GC17743|
Sample solution is provided at 25 µL, 10mM.
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|Solubility||<32.74mg/ml in DMSO; <32.74mg/ml in ethanol||Storage||Store at -20°C|
|General tips||For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months.|
|Shipping Condition||Evaluation sample solution : ship with blue ice
All other available size: ship with RT , or blue ice upon request
A987306,cis-4-(Piperazin-1-yl)-5,6,7a,8,9,10,11,11a-octahydrobenzofuro[2,3-h]quin- azolin-2-amine, is a selective and potent H4 receptor antagonist .
H4R is one of 4 known G-protein-coupled receptors (H1, H2, H3 and H4 receptors) of histamine. It is for mediating some physiological functions of histamine .
In a cell-based Ca2+-flux functional assay, A 987306 had no activation to the receptor, but blocked the H4R activation induced by endogenous histamine. A 987306 potently decreased histamine-mediated binding between rat H4-receptor-containing membranes and GTP-γ-[35S] with a Kb of 6 nM .
In Sprague-Dawley rats, after ip injection, A 987306 had a favorable fractional bioavailability (Fip/iv =72%), a half-life of 4.7 h and a Cmax of 1.73 μM at a Tmax of 0.25 h after dosing. After oral dosing, A 987306 had a moderate fractional oral bioavailability (Fpo/iv =26%) with a half-life of 3.7 h and a Cmax of 0.30 μM at a Tmax of 1.5 h after dosing. The plasma protein binding of A 987306 measured in rats was found to be 59% .
To human H4R and rat H4R, the Ki values of A 987306 are 5.8 nM and 3.4 nM, respectively. A 987306 reduced scratch responses in mice with an ED50 of 0.36 μmol/kg. A 987306 was found to be selective and bear an IC50 > 810 nM for over 100 kinases .
. Vanina A. Medina and Elena S. Rivera. Histamine receptors and cancer pharmacology. British Journal of Pharmacology, 2010, 161:755-767.
. M.I. Strakhova, C.A. Cuff, A.M. Manelli, et al. In vitro and in vivo characterization of A-940894: a potent histamine H4 receptor antagonist with anti-inflammatory properties. British Journal of Pharmacology, 2009, 157:44-54.
. Huaqing Liu, Robert J. Altenbach, Tracy L. Carr, et al. cis-4-(Piperazin-1-yl)-5,6,7a,8,9,10,11,11a-octahydrobenzofuro[2,3-h]quinazolin-2-amine (A-987306), A New Histamine H4R Antagonist that Blocks Pain Responses against Carrageenan-Induced Hyperalgesia. J. Med. Chem., 2008, 51:7094-7098.