Sodium 4-(2-Amino-6-methyl-6H-imidazo[4',5':3,4]benzo[1,2-d]thiazol-7-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.