Cibacron pront Blue 3R Procion Blue H-4R,P-4R 2-Anthracenesulfonic acid, 1-amino-4-[[3-[(4-chloro-6-ethoxy-1, 3, 5-triazin-2-yl)amino]-2, 4, 6-trimethyl-5-sulfophenyl]amino]-9, 10-dihydro-9, 10-dioxo, disodium salt Brilliant Blue K-3R Dycosactive Brilliant Blue K-3R Reactive Blue K-3R Youhaoreactive Brilliant Blue K-3R. Brill. Blue K-3R