a 943931

A-943931 is a histamine H4receptor antagonist (Ki= 3.8 nM).1In vivo, A-943931 inhibits scratching induced by clobenpropit in mice (ED50= 26 μmoles/kg, i.p.). 1.Milicic, I., Witte, D.G., Miller, T.L., et al.Identification of two potent and selective histamine H4 receptor antagonists with antipruritic activityFASEB J.23(S1)760.768-760.768(2009)

A-943931, a selective and potent antagonist of the histamine H4 receptor (H4R), demonstrates affinity with pKi values of 4.6 and 3.8 nM for human and rat H4Rs, respectively. This compound exhibits anti-inflammatory and antinociceptive properties.