Synonyms: 5-(benzoylamino)-4-hydroxy-3-[[1-sulpho-6-[[2-(sulphooxy)ethyl]sulphonyl]-2-naphthyl]azo]naphthalene-2,7-disulphonic acid, sodium salt;2,7-Naphthalenedisulfonic acid, 5-(benzoylamino)-4-hydroxy-3-1-sulfo-6-2-(sulfooxy)ethylsulfonyl-2-naphthalenylazo-, sodium salt;2,7-Naphthalenedisulfonic acid, 5-(benzoylamino)-4-hydroxy-3-[[1-sulfo-6-[[2-(sulfooxy)ethyl] sulfonyl]-2-naphthalenyl]azo]-, sodium salt C.I. Reactive red 180 2,7-Naphthalenedisulfonic acid,5-(benzoylamino)-4-hydroxy-3-[[1-sulfo-6-[[2-(sulfooxy)ethyl] sulfonyl]-2-naphthalenyl]azo]-,sodium salt;5-(Benzoylamino)-4-hydroxy-3-[[1-sulfo-6-[[2-(sulfooxy)ethyl]sulfonyl]-2-naphthalenyl]azo]-2,7-naphthalenedisulfonic acid/sodium,(1:x) salt