Sulfinpyrazone STD-4-[2-(benzenesulfinyl)ethyl]-1,2-diphenylpyrazolidine-3,5-dione
Sulfinpyrazone-IMP-C-4-hydroxy-1,2-diphenyl-4-[2-(phenylsulfinyl)ethyl]-pyrazolidine-3,5-dione