h4 receptor antagonist 1

H4 Receptor antagonist 1 is a potent and selective histamine H4 receptor inverse agonist with an IC50 of 19 nM.

Histamine H4 receptor antagonist-1 is a potent antagonist of the histamine H4 receptor (hydrochloride).

H4R antagonist 1 is a highly selective histamine H4 receptor (H4R) antagonist (IC50: 27 nM). H4R antagonist 1 does not show any noticeable binding affinity to other subtypes of histamine receptors, H1R, H2R, and H3R.

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)

Izuforant (JW1601) (Compound 24) exhibits potent anti-inflammatory and anti-pruritic activities, with a binding affinity for human serotonin 3 receptor (h5-HT3R) and an IC50 value of 9.1 μM. It is also an orally active antagonist of histamine H4 receptor (H4R), showing an IC50 value of 36 nM against human H4R [1] [2].

H4R Antagonist 2, a potent Furo[3,2-d]pyrimidine derivative, serves as a histamine H4 receptor antagonist and holds potential for research into rheumatoid arthritis [1] (page 68).