1-(2-(1-Benzimidazolyl)ethyl)-3-butyrylurea 1-(2-Butyrylureidoethyl)benzimidazole 5-23-06-00228 (Beilstein Handbook Reference) 59337-01-8 BRN 0962771 Urea, 1-(2-(1-benzimidazolyl)ethyl)-3-butyryl-