1-(p-Sulfophenyl)-3-phenyl-pyrazol [German] 5-23-07-00181 (Beilstein Handbook Reference) 78109-90-7 BRN 0961679 Benzenesulfonic acid, p-(3-phenyl-1-pyrazolyl)- Pyrazole, 3-phenyl-1-(p-sulfophenyl)- p-(3-Phenyl-1-pyrazolyl)benzenesulfonic acid