碘化频哪氰醇

双花青 A

(4Z)-4-[(1-ethylquinolin-1-ium-2-yl)methylidene]-2-[(E)-(1-ethylquinolin-2-ylidene)methyl]-3-oxocyclobuten-1-olate

1,1'-二乙基-2,2'-碘化氰

乙基红碘