A-943931 is a histamine H4 receptor antagonist (Ki = 3.8 nM).1 In 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)
















