C.I.20175;Acid Brown 213;C.I.Acid Brown 213;Acid brown 213 (C.I. 20175);C.I.Acid Brown 213:C.I.20175;disodium 5-[[2,4-dihydroxy-3-[(4-sulphonatophenyl)azo]phenyl]azo]-2-(phenylamino)benzenesulphonate;5-[[2,4-Dihydroxy-3-[(4-sulfophenyl)azo]phenyl]azo]-2-(phenylamino)benzenesulfonic acid disodium salt;Benzenesulfonic acid, 5-[[2,4-dihydroxy-3-[(4-sulfophenyl) azo]phenyl]azo]-2-(phenylamino)-, disodium salt;disodium,2-anilino-5-[(2E)-2-[(5E)-4,6-dioxo-5-[(4-sulfonatophenyl)hydrazinylidene]cyclohex-2-en-1-ylidene]hydrazinyl]benzenesulfonate