[4,4'-Bi-3H-pyrazole]-3,3'-dione, 2,2',4,4'-tetrahydro-4-hydroxy-5,5'-dimethyl-2,2'-diphenyl-

[4,4'-Bi-3H-pyrazole]-3,3'-dione, 2,2',4,4'-tetrahydro-4-hydroxy-5,5'-dimethyl-2,2'-diphenyl- · CAS 153952-07-9