Tizanidine int;TIZANIDINE EP IMPURITY E;Tizanidin Related Compound A;(5-chloropiazthiol-4-yl)amine;Tizanidine USP Related Compound A;5-Chloro-2,1,3-benzothiadiazol-4-am;6-chloro-2,1,3-benzothiadiazol-7-amine;Tizanidine Hydrochloride EP Impurity E;4-Amino-5-chloro-2,1,3-benzothiadiazole;4-AMINO-5-CHLORO-2,1,3-BENZOTHIODIAZOLE