1-AcetyliMidazolidinethione;1-Acetyl-2-imidazolidinethione;TIZANIDINE RELATED COMPOUND C (50 MG) (1-ACETYLIMIDAZOLIDINE-2-THIONE);TIZANIDINE IMPURITY 4;Tizanidine USP RC C;Tizanidine USP Related Compound C;Ethanone, 1-(2-thioxo-1-imidazolidinyl)-;Tizanidine Related Compound C (1-acetylimidazolidine-2-thione) (1667938)