2-[1-(4-octadecylsulfanyl-phenyl)-5-oxo-2,5-dihydro-1H-pyrazol-3-ylcarbamoyl]-benzenesulfonic acid, 2-({1-[2-(octadecylsulfanyl)phenyl]-5-oxo-4,5-dihydro-1h-pyrazol-3-yl}carbamoyl)benzenesulfonic acid, EINECS 219-899-8, 1-(2-Octadecylthio-phenyl)-3-(o-sulfobenzamido)-2-pyrazolin-5-on, Benzenesulfonic acid,2-[[[4,5-dihydro-1-[2-(octadecylthio)phenyl]-5-oxo-1H-pyrazol-3-yl]amino]carbonyl], o-[({4,5-dihydro-1-[2-(octadecylthio)phenyl]-5-oxo-1H-pyrazol-3-yl}amino)carbonyl]benzenesulfonic acid