4-乙氧基-5-羟基萘-2,7-二磺酸

(3Z)-4,5-dioxo-3,6-bis[(4-sulfonaphthalen-1-yl)hydrazinylidene]naphthalene-2,7-disulfonic acid

5-hydroxy-3,4-dioxonaphthalene-2,7-disulfonic acid

4,5-二羟基-3-(1-萘氮杂)-2,7-萘二磺酸