Ethyl 4-(5-Amino-1-methyl-4-thiocyanato-1H-benzo[d]imidazol-2-yl)butanoate is an intermediate in synthesizing 4-(6-(2-Chloroethyl)-3-methyl-3,6,7,8-tetrahydroimidazo[4',5':5,6]benzo[1,2-b][1,4]thiazin-2-yl)butanoic Acid (C367195), a degradation production of Bendamustine (B132500), which is used as an anticancer drug.