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4,4'-双-(3-甲基-1-苯基-5-吡唑啉酮) , 双(3-甲基-1-苯基-5-吡唑啉酮) , 3,3'-二甲基-1,1'-二苯基-4,4'-联(5-吡唑啉酮) , 双吡唑啉酮 , 4,4'-双(1-苯基-3-甲基-5-吡唑啉酮), (4,4'-Bi-3H-pyrazole)-3,3'-dione, 2,2',4,4'-tetrahydro-5,5'-dimethyl-2,2'-diphenyl-, MFCD00020765, BIS(3-METHYL-1-PHENYL-5-PYRAZOLONE), bis-pyrazolone, 3,3'-dimethyl-1,1'-diphenyl-4,4'-bi-4H-pyrazole-5,5'(1H,1'H)-dione, 4,4'-bis-(1-phenyl-3-methyl-2-pyrazolin-5-one), EINECS 231-282-5, 3,3'-Dimethyl-1,1'-diphenyl-(4,4'-bi-2-pyrazoline)-5,5'-dione, [4,4'-Bi-3H-pyrazole]-3,3'-dione, 2,2',4,4'-tetrahydro-5,5'-dimethyl-2,2'-diphenyl-, 3,3'-dimethyl-1,1'-diphenyl-4,4'-bi-5-pyrazolone, edaravone diMer, 5,5'-Dimethyl-2,2'-diphenyl-2,2',4,4'-tetrahydro-3H,3'H-4,4'-bipyrazole-3,3'-dione, BIS(1-PHENYL-3-METHYL-5-PYRAZOLONE), 5,5'-dimethyl-2,2'-diphenyl-1,2,1',2'-tetrahydro-[4,4']bipyrazolyl-3,3'-dione, [4,4'-Bi-1H-pyrazole]-5,5'(4H,4'H)-dione, 3,3'-dimethyl-1,1'-diphenyl-, [4,4'-Bi-2-pyrazoline]-5,5'-dione, 3,3'-dimethyl-1,1'-diphenyl-, edaravone related substance A, bis-4,4'-(3-methyl-5-oxo-1-phenylpyrazole), (4,4'-Bi-2-pyrazoline)-5,5'-dione, 3,3'-dimethyl-1,1'-diphenyl-, Bis(1-phenyl-3-methyl-5-pyrazo, 4,4'-Bis(1-phenyl-3-methyl-5-pyrazolone)