Synonyms: Cobaltate(1-),[4-[[6-[(4-amino-6-chloro-1,3,5-triazin-2-yl)amino]-1-hydroxy-3-sulfo-2-naphthalenyl]azo]-3-hydroxy-7-nitro-1-naphthalenesulfonato(4-)]-,sodium; 1-Naphthalenesulfonic acid, 4-[[6-[(4-amino-6-chloro-1,3,5-triazin-2-yl)amino]-1-hydroxy-3-sulfo-2-naphthalenyl]azo]-3-hydroxy-7-nitro-,cobalt complex; Sodium[4-[[6-[(4-amino-6-chloro-1,3,5-triazin-2-yl)amino]-1-hydroxy-3-sulfo-2-naphthyl]azo]-3-hydroxy-7-nitronaphthalene-1-sulfonato(4-)]cobaltate(1-)