DuckCorp Dico

Found one definition

1.                 From German - English Ding/FreeDict dictionary ver. 1.9-fd1:
                   
   
   
                   
                     
   Acetylcystein /ˈatseːtˌylsyʃtˌaɪn/ (ACC /ˈak/) <neut, n, sg>
   acetylcysteine <n>ACC,  /ˈak/ , N-acetylcysteine <n>, N-acetyl-L-cysteine <n>NAC,  /nˈɑːk/
      Synonyms: N-Acetylcystein, Mercaptursäure