SEARCH Articles Figures Tables Acyl isourea Acyl isoureas Amines isoureas Carbodiimides isoureas Ethers isoureas Guanidines isoureas Isourea Isourea protonation Isoureas 1.2.4- thiadiazoles, 5-amino Isoureas carboxylic acid esters Isoureas mixed Isoureas ureas Isoureas, cyclic O-Acyl isoureas O-acyl isourea