6598-60-3 7-[[4-[(4-Amino-3-sodiosulfophenyl)azo]-2-ethoxy-1-naphthalenyl]azo]-6-hydroxy-2-[3-[(2,4-dihydroxyphenyl)azo]phenyl]-1H-naphth[1,2-d]imidazole-8-sulfonic acid sodium salt
71646-96-3 2-(3,6-dihydroxyxanthen-9-yl)benzoic acid, potassium salt