5-[[4-Chloro-6-[[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]amino]-1,3,5-triazine-2-yl]amino]-4-hydroxy-3-[(2-sulfophenyl)azo]naphthalene-2,7-disulfonic acid tetrasodium salt C.I.Reactive Red 240 Ryvalon Red 2B. 5-[4-Chloro-6-[4-(2-sodiosulfooxyethylsulfonyl)anilino]-1,3,5-triazin-2-ylamino]-4-hydroxy-3-(2-sodiosulfophenylazo)-2,7-naphthalenedisulfonic acid disodium salt C.I.Reactive Red 227 Sulfuric acid 2-[[4-[[4-[[3,6-bis(sodiooxysulfonyl)-7-[2-(sodiooxysulfonyl)phenylazo]-8-hydroxynaphthalene-1-yl]amino]-6-chloro-1,3,5-triazine-2-yl]amino]phenyl]sulfonyl]ethyl=sodium ester salt Reactive Red 240 Reactive Red 227