2-Amino-1,3,4-thiadiazol-5-thiol; 2-Amino-1,3,4-thiadiazole-5-mercaptan; 2-Amino-1,3,4-thiadiazole-5-thiol; 2-Amino-5-mercapto-1,3,4-thiadiazole; 2-Amino-Δ2-1,3,4-thiadiazoline-5-thione;2-Mercapto-5-amino-1,3,4-thiadiazole; 2-Thiol-5-amino-1,3,4-thiadiazole; 5-Amino-1,3,4-thiadiazole-2(3H)-thione; 5-Amino-1,3,4-thiadiazole-2-thiol; 5-Amino-1,3,4-thiadiazole-2-thione; 5-Amino-1,3,4-thiadiazoline-2-thione; 5-Amino-1,3,4-thidiaz; Acetazolamide - Impurity G