Brimonidine tartrate70359-46-531 % similar Quinoxaline91-19-031 % similar 5-Amino-8-hydroxyquinoline dihydrochloride21302-43-231 % similar 4-Bromobenzene-1,2-diamine1575-37-730 % similar 4-Amino-7-chloroquinoline1198-40-930 % similar