another dimaprit homologue without activity at histamine receptors , homodimaprit ( s- [ 4-n , n-dimethylaminobutyl ] isothiourea ) , did not produce eosinophil chemotaxis when applied topically , nor did the h2-agonists impromidine , histamine , or 4-methylhistamine , whether co-administered with an h2-antagonist or not .
C0058185
dimaprit
C0039958
isothiourea