英文名称:C.I. Direct Orange 26; Direct Orang 26; Direct Orang 26; C.I. Direct Orange 26 Disodium Salt; Disodium 7,7'-(Carbonyldiimino)Bis[4-Hydroxy-3-(Phenylazo)Naphthalene-2-Sulphonate]; Disodium (3E)-4-Oxo-7-({[(6E)-5-Oxo-6-(2-Phenylhydrazinylidene)-7-Sulfonato-5,6-Dihydronaphthalen-2-Yl]Carbamoyl}Amino)-3-(2-Phenylhydrazinylidene)-3,4-Dihydronaphthalene-2-Sulfonate; C.I. Direct Orange 26 (Van); C.I. Direct Orange 26, Disodium Salt (8Ci); C.I. Direct Orange 26, Disodium Salt (8Ci); Disodium (3E)-4-Oxo-7-({[(6E)-5-Oxo-6-(2-Phenylhydrazinylidene)-7-Sulfonato-5,6-Dihydronaphthalen-2-Yl]Carbamoyl}Amino)-3-(2-Phenylhydrazinylidene)-3,4-Dihydronaphthalene-2-Sulfonate; C.I. 29150; C.I. Direct Orange 26 Disodium Salt; C.I. Direct Orange 26 (Van); Direct Orange S