1,5-Naphthalenedisulfonic acid, 3-[[4-[[4-[(4-amino-5-methoxy-2-methylphenyl)azo]-6(or 7)-sulfo-1-naphthalenyl]azo]-1-naphthalenyl]azo]-, trisodium salt 8006-05-1 Benzanil Diazo Blue RER C.I. 34010 C.I. Direct Blue 126 Direct Diazo Lightfast Blue K Direct Diazol Fast Blue NSC47769 Phenazo Blue sodium