다이렉트패스트블루FRLC.I.34145Diazol Light Blue BDirect Fast Blue FRC.I. Direct blue 72Direct Fast Blue FRLC.I.Direct Blue 72(34145)6'-Amino-1'-hydroxy-4-[(4-phenylazo-6-sodiosulfo-1-naphthalenyl)azo][1,2'-azobisnaphthalene]-3',6-disulfonic acid disodium salt