Synonyms:
4,4'-dihydroxy-7,7'-ureylenedi(naphthalene-2-sulphonic acid) ; n,n'-bis[6-(1-naphthol-3-sulfonic acid)]urea ; j acid urea, free acid ; 6,6'-ureylene-bis(1-naphthol-3-sulfonic acid) ; phosgenated ; 7,7'-(carbonyldiimino)bis[4-hydroxy-2-naphthalenesulfonic aci ; 66ureylenebis1naphthol3sulphonicaciddisodiumsalt ; n,n'-bis(4-hydroxy-2-sulfonaphthalene-7-yl)urea ; 6,6'-ureylenbis-1-naphthol-3-sulfonic acid ; 7,7'-ureylenebis(4-hydroxy-2-naphthalenesulfonic acid)
