| Zincon sodium salt hydrate |
| Benzoic acid,2-[1-(2-hydroxy-5-sulfophenyl)-3-phenyl-5-formazano]- |
| Zincon |
| 2-[1-(2-hydroxy-5-sulfophenyl)-3-phenyl-5-formazano]-Benzoic acid |
| 2-[[.alpha.-(2-Hydroxy-5-sulfophenylazo)benzylidene]hydrazino]benzoic acid |
| 2-[1-(2-hydroxy-5-sulfophenyl)-3-phenyl-5-formazano]-benzoic aci |
| zincon monosodium salt |