Tizanidine hydrochloride64461-82-1100 % similar Tizanidine51322-75-993 % similar Clonidine hydrochloride4205-91-862 % similar Clonidine4205-90-756 % similar Apraclonidine hydrochloride73218-79-854 % similar Apraclonidine66711-21-548 % similar 5-Chloro-4-amino-2,1,3-benzothiadiazole115398-34-040 % similar 5-Chloro-4-amino-2,1,3-benzothiadiazole30536-19-740 % similar Brimonidine59803-98-438 % similar Moxonidine75438-57-234 % similar Lofexidine hydrochloride21498-08-833 % similar Brimonidine tartrate70359-46-531 % similar