5-methyl-1,3,4-thiadiazole-2(3H)-thione; 5-Methyl-1,3,4-Thiadiazole-2(3H)-thione; 2-Methyl-?2-1,3,4-thiadiazoline-5-thione; 2-Mercapto-5-methyl-1,3,4-thiadiazole; 2-Methyl-1,3,4-thiadiazol-5-thiol; 5-Methyl-2-sulfanyl-1,3,4-thiadiazole; 5-Methyl-3H-1,3,4-thiadiazole-2-thione; 5-Methyl-2-mercapto-1,3,4-thiadiazole; Cefazolin EP Impurity E
