Naphthalen-2-ylmethyl (5-Chlorobenzo[c][1,2,5]thiadiazol-4-yl)carbamimidothioate is an intermediate in synthesizing N-(5-Chloro-2,1,3-benzothiadiazol-4-yl)-guanidine (C367050), a metabolite of Tizanidine (T449500, HCl salt) which is an α2-adrenergic agonist.