Synonyms: 1-Naphthalenesulfonicacid,4-hydroxy-3-[[4'-[[1-hydroxy-6-(phenylamino)-3-sulfo-2-naphthalenyl]azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]-,disodium salt (9CI); Japanol Copper Blue 2B; BenzoCopper Blue BBS; C.I. Direct Blue 168 (7CI); Chlorazol Copper Blue 2B;Direct Blue 168; DirectCopper Blue 2B;(3Z)-7-anilino-3-[[2-methoxy-4-[3-methoxy-4-[(2Z)-2-(1-oxo-4- sulfonatonaphthalen-2-ylidene)hydrazinyl]phenyl]phenyl]hydrazinylidene]- 4-oxonaphthalene-2-sulfonate; C.I. 24185; C.I. Direct Blue 168, disodiumsalt (8CI); Kayaku Direct Copper Blue 2B; Direct Blue 2A; Aizen Direct Copper Blue 2BH; Atul Direct Copper Blue RR; Direct Copper Blue 2A;1-Naphthalenesulfonicacid,4-hydroxy-3-[2-[4'-[2-[1-hydroxy-6-(phenylamino)-3-sulfo-2-naphthalenyl]diazenyl]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]diazenyl]-,sodium salt (1:2); MitsuiDirect Copper Blue 2B; Benzo Cuprol Blue BBS; Direct Blue CBB;disodium;