1,5-Naphthalenedisulfonicacid, 3-[[4-[3-[2-methoxy-4-[(m-sulfophenyl)azo]phenyl]ureido]-o-tolyl]azo]-,trisodium salt (8CI); 1,5-Naphthalenedisulfonic acid,3-[[4-[[[[2-methoxy-4-[(3-sulfophenyl)azo]phenyl]amino]carbonyl]amino]-2-methylphenyl]azo]-,trisodium salt (9CI)