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ID CAS Name Synonyms Molecular Formula Category
1150446-04-1CCRIS 6578CCRIS 6578C20H18N4O2
27477-67-0BISPYRAZOLONEBISPYRAZOLONE
LABOTEST-BB LT00008461
BIS(3-METHYL-1-PHENYL-5-PYRAZOLONE)
BIS(1-PHENYL-3-METHYL-5-PYRAZOLONE)
4,4'-BIS(1-PHENYL-3-METHYL-5-PYRAZOLONE)
4,4'-BIS(3-METHYL-1-PHENYL-5-PYRAZOLONE)
3,3-DIMETHYL-1,1-DIPHENYL-(4,4-BI-2-PYRAZOLINE)-5,5-DIONE
3,3'-DIMETHYL-1,1'-DIPHENYL-[4,4'-BI-2-PYRAZOLINE]-5,5'-DIONE
C20H18N4O2;Fine Chemicals;Aromatics, Heterocycles, Impurities, Pharmaceuticals, Intermediates
3BUTTPARK 55\40-05BUTTPARK 55\40-05C20H18N4O2
41821669-43-5BRD2492 (BRD 2492)BRD2492 (BRD 2492)
BRD2492
C20H18N4O2
516154-03-31,7-Dibenzyl-3-methylxanthine1,7-Dibenzyl-3-methylxanthine
1,7-Dibenzyl-3-methylxanthine,1,7-Dibenzyl-3-methyl-1H-purine-2,6(3H,7H)-dione
C20H18N4O2
6306325-45-1N,N'-bis(3-cyanophenyl)hexanediamideN,N'-bis(3-cyanophenyl)hexanediamide
Hexanediamide, N1,N6-bis(3-cyanophenyl)-
C20H18N4O2
727184-69-64,4'-[p-phenylenebis(azo)]di-m-cresol4,4'-[p-phenylenebis(azo)]di-m-cresol
4,4'-[1,4-phenylenebis(azo)]bis [3-methyl-Phenol]
Phenol, 4,4'-[1,4-phenylenebis(2,1-diazenediyl)]bis[3-methyl-
C20H18N4O2
866639-67-61,2-di(5-amidino-2-benzofuranyl)ethaneNSC 266477
1,2-di(5-amidino-2-benzofuranyl)ethane
5-Benzofurancarboximidamide, 2,2'-(1,2-ethanediyl)bis-
2-[2-(5-carbamimidoyl-1-benzofuran-2-yl)ethyl]-1-benzofuran-5-carboximidamide
C20H18N4O2
92362-26-7Benzamide,N,N'-1,4-phenylenebis[4-amino-Benzamide,N,N'-1,4-phenylenebis[4-amino-
N,N-(1,4-PHENYLENE)BIS(4-AMINOBENZAMIDE)
4-amino-N-[4-[(4-aminobenzoyl)amino]phenyl]benzamide
C20H18N4O2
10N~1~,N~6~-bis(3-cyanophenyl)hexanediamideN~1~,N~6~-bis(3-cyanophenyl)hexanediamideC20H18N4O2
111-(4-amidinophenyl)-3-(4-phenoxyphenyl)urea1-(4-amidinophenyl)-3-(4-phenoxyphenyl)ureaC20H18N4O2
12321531-61-7N~1~,N~3~-bis(2-pyridinylmethyl)isophthalamideN~1~,N~3~-bis(2-pyridinylmethyl)isophthalamideC20H18N4O2
13N~1~,N~4~-bis(3-pyridinylmethyl)terephthalamideN~1~,N~4~-bis(3-pyridinylmethyl)terephthalamideC20H18N4O2
1434066-75-6N,N'-bis(4-aMinophenyl)benzene-1,4-dicarboxaMideN,N'-bis(4-aMinophenyl)benzene-1,4-dicarboxaMideC20H18N4O2
151916512-40-7N,N'-(2,5-dimethyl-1,4-phenylene)diisonicotinamideN,N'-(2,5-dimethyl-1,4-phenylene)diisonicotinamideC20H18N4O2
166657-00-74-[[2-methoxy-5-methyl-4-(phenylazo)phenyl]azo]phenolEinecs 229-689-8
4-[[2-methoxy-5-methyl-4-(phenylazo)phenyl]azo]phenol
Phenol, 4-((2-methoxy-5-methyl-4-(phenylazo)phenyl)azo)-
Phenol, 4-(2-(2-methoxy-5-methyl-4-(2-phenyldiazenyl)phenyl)diazenyl)-
C20H18N4O2
172519-64-44(3H)-Quinazolinone, 3,3'-(1,2-ethanediyl)bis[2-methyl-4(3H)-Quinazolinone, 3,3'-(1,2-ethanediyl)bis[2-methyl-C20H18N4O2
1830828-87-64-[[4-[(4-hydroxy-3-methylphenyl)azo]phenyl]azo]-m-cresol4-[[4-[(4-hydroxy-3-methylphenyl)azo]phenyl]azo]-m-cresol
Phenol, 4-4-(4-hydroxy-3-methylphenyl)azophenylazo-3-methyl-
4-[[4-[(4-Hydroxy-3-methylphenyl)azo]phenyl]azo]-3-methylphenol
Phenol, 4-[2-[4-[2-(4-hydroxy-2-methylphenyl)diazenyl]phenyl]diazenyl]-2-methyl-
C20H18N4O2
19N-(4-Methylphenyl)-N'-(4-nitrophenyl)-N''-(phenyl)guanidineN-(4-Methylphenyl)-N'-(4-nitrophenyl)-N''-(phenyl)guanidineC20H18N4O2
20177415-76-83,3'-diMethyl-1,1'-diphenyl-1H,1'H-4,4'-bipyrazole-5,5'-diolEdaravone-1
Edaravone Impurity 4
Edaravone Impurity 23
Edaravone Impurities557
3,3'-Dimethyl-1,1'-diphenyl[4,4'-bi-1H-pyrazole]-5,5'-diol
3,3'-diMethyl-1,1'-diphenyl-1H,1'H-4,4'-bipyrazole-5,5'-diol
[4,4'-Bi-1H-pyrazole]-5,5'-diol, 3,3'-dimethyl-1,1'-diphenyl-
C20H18N4O2Edaravone; Impurity reference substance; Edaravone impurity; Reference substance-impurity reference substance
211-(3-{[2-(3-acetylanilino)-4-pyrimidinyl]amino}phenyl)ethanone1-(3-{[2-(3-acetylanilino)-4-pyrimidinyl]amino}phenyl)ethanoneC20H18N4O2
2297908-11-7Butanamide, 2-[2-(2-aminophenyl)diazenyl]-N-1-naphthalenyl-3-oxo-Butanamide, 2-[2-(2-aminophenyl)diazenyl]-N-1-naphthalenyl-3-oxo-C20H18N4O2
236622-98-6Ethanedioic acid,1,2-bis[2-(3-phenyl-2-propen-1-ylidene)hydrazide]Ethanedioic acid,1,2-bis[2-(3-phenyl-2-propen-1-ylidene)hydrazide]C20H18N4O2
24603093-68-16-Quinoxalinecarboxamide,N-[2-(1-pyrrolidinylcarbonyl)phenyl]-(9CI)6-Quinoxalinecarboxamide, N-[2-(1-pyrrolidinylcarbonyl)phenyl]-
6-Quinoxalinecarboxamide,N-[2-(1-pyrrolidinylcarbonyl)phenyl]-(9CI)
C20H18N4O2PYRAZINE
25911239-27-59,10-Anthracenedione, 1-amino-4-[[3-(1H-imidazol-1-yl)propyl]amino]-9,10-Anthracenedione, 1-amino-4-[[3-(1H-imidazol-1-yl)propyl]amino]-C20H18N4O2
26879595-66-12-methoxy-4-{3-[(4-methylphenyl)amino]imidazo[1,2-a]pyrazin-2-yl}phenol2-methoxy-4-{3-[(4-methylphenyl)amino]imidazo[1,2-a]pyrazin-2-yl}phenolC20H18N4O2
27173838-67-02-[4-[4-(3-Pyridinyl)-1H-imidazol-1-yl]butyl]-1H-isoindole-1,3(2H)-dione2-[4-[4-(3-Pyridinyl)-1H-imidazol-1-yl]butyl]-1H-isoindole-1,3(2H)-dioneC20H18N4O2
28220434-01-5Phenol, 3-(1H-imidazol-2-ylmethyl)-4-[3-(1H-imidazol-2-ylmethyl)phenoxy]-Phenol, 3-(1H-imidazol-2-ylmethyl)-4-[3-(1H-imidazol-2-ylmethyl)phenoxy]-C20H18N4O2
29356096-77-0N-(4-{2-[(2-methyl-3-quinolinyl)carbonyl]carbohydrazonoyl}phenyl)acetamideN-(4-{2-[(2-methyl-3-quinolinyl)carbonyl]carbohydrazonoyl}phenyl)acetamideC20H18N4O2
30866142-92-9N-(5H-CHROMENO[4,3-D]PYRIMIDIN-2-YL)-N'-[(4-METHYLBENZYL)OXY]IMINOFORMAMIDEN-(5H-CHROMENO[4,3-D]PYRIMIDIN-2-YL)-N'-[(4-METHYLBENZYL)OXY]IMINOFORMAMIDE
(E)-N-{5H-chromeno[4,3-d]pyrimidin-2-yl}-N'-[(4-methylphenyl)methoxy]methanimidamide
C20H18N4O2
312-Amino-6-[N-(4-acetylphenyl)-N-(2-propynyl)aminomethyl]quinazolin-4(3H)-one2-Amino-6-[N-(4-acetylphenyl)-N-(2-propynyl)aminomethyl]quinazolin-4(3H)-oneC20H18N4O2
32338758-01-32-(4-METHYLPHENYL)-6-(4-NITROPHENYL)-5,6,7,8-TETRAHYDROPYRIDO[4,3-D]PYRIMIDINE2-(4-methylphenyl)-6-(4-nitrophenyl)-5H,6H,7H,8H-pyrido[4,3-d]pyrimidine
2-(4-METHYLPHENYL)-6-(4-NITROPHENYL)-5,6,7,8-TETRAHYDROPYRIDO[4,3-D]PYRIMIDINE
C20H18N4O2
331010901-40-21-benzofuran-2-yl[4-([1,2,4]triazolo[4,3-a]pyridin-3-yl)piperidin-1-yl]methanoneMethanone, 2-benzofuranyl[4-(1,2,4-triazolo[4,3-a]pyridin-3-yl)-1-piperidinyl]-
1-benzofuran-2-yl[4-([1,2,4]triazolo[4,3-a]pyridin-3-yl)piperidin-1-yl]methanone
C20H18N4O2
34339103-17-24-METHOXY-2-[2-(([(4-METHYLBENZYL)OXY]IMINO)METHYL)-1H-PYRROL-1-YL]NICOTINONITRILE4-METHOXY-2-[2-(([(4-METHYLBENZYL)OXY]IMINO)METHYL)-1H-PYRROL-1-YL]NICOTINONITRILE
3-Pyridinecarbonitrile, 4-methoxy-2-[2-[[[(4-methylphenyl)methoxy]imino]methyl]-1H-pyrrol-1-yl]-
4-methoxy-2-{2-[(1E)-{[(4-methylphenyl)methoxy]imino}methyl]-1H-pyrrol-1-yl}pyridine-3-carbonitrile
C20H18N4O2
35512818-09-6N'-[(1,5-dimethyl-1H-pyrazol-4-yl)methylene]-9-hydroxy-9H-fluorene-9-carbohydrazideN'-[(1,5-dimethyl-1H-pyrazol-4-yl)methylene]-9-hydroxy-9H-fluorene-9-carbohydrazideC20H18N4O2
36433971-83-66-(2-aMinophenyl)-1,3-diMethyl-5-phenyl-1H-pyrrolo[3,4-d]pyriMidine-2,4(3H,6H)-dione6-(2-aMinophenyl)-1,3-diMethyl-5-phenyl-1H-pyrrolo[3,4-d]pyriMidine-2,4(3H,6H)-dioneC20H18N4O2
37603092-83-76H-Pyrazolo[3,4-d]pyrimidin-6-one,5-(4-ethoxyphenyl)-1,5-dihydro-3-methyl-1-phenyl-(9CI)6H-Pyrazolo[3,4-d]pyrimidin-6-one, 5-(4-ethoxyphenyl)-1,5-dihydro-3-methyl-1-phenyl-
6H-Pyrazolo[3,4-d]pyrimidin-6-one,5-(4-ethoxyphenyl)-1,5-dihydro-3-methyl-1-phenyl-(9CI)
C20H18N4O2PYRAZOLE
381629611-27-34-(2-Cyclopropylpyridin-3-yl)-6-(3,5-dimethylisoxazol-4-yl)-1H-benzo[d]imidazol-2(3H)-one4-(2-Cyclopropylpyridin-3-yl)-6-(3,5-dimethylisoxazol-4-yl)-1H-benzo[d]imidazol-2(3H)-one
2H-Benzimidazol-2-one, 4-(2-cyclopropyl-3-pyridinyl)-6-(3,5-dimethyl-4-isoxazolyl)-1,3-dihydro-
C20H18N4O2
39N-benzyl-N,1-dimethyl-4-oxo-1,4-dihydropyrido[1,2-a]pyrrolo[2,3-d]pyrimidine-2-carboxamideN-benzyl-N,1-dimethyl-4-oxo-1,4-dihydropyrido[1,2-a]pyrrolo[2,3-d]pyrimidine-2-carboxamideC20H18N4O2
40901044-44-85-(4-methoxyphenyl)-6-methyl-1-(4-methylphenyl)-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one5-(4-methoxyphenyl)-6-methyl-1-(4-methylphenyl)-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-oneC20H18N4O2
41678545-33-04-{3-[(1-allyl-2,5-dioxo-4-imidazolidinylidene)methyl]-2,5-dimethyl-1H-pyrrol-1-yl}benzonitrile4-{3-[(1-allyl-2,5-dioxo-4-imidazolidinylidene)methyl]-2,5-dimethyl-1H-pyrrol-1-yl}benzonitrileC20H18N4O2
424-[(Z)-(dimethylamino)(7-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-2-phenyl-1,3-oxazol-5-one4-[(Z)-(dimethylamino)(7-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-2-phenyl-1,3-oxazol-5-oneC20H18N4O2
436-(2-methyl-1H-indol-3-yl)-3-(4-methylphenyl)-5-oxo-5,6-dihydro-1,2,4-triazine-1(2H)-carbaldehyde6-(2-methyl-1H-indol-3-yl)-3-(4-methylphenyl)-5-oxo-5,6-dihydro-1,2,4-triazine-1(2H)-carbaldehydeC20H18N4O2
441,9-dimethyl-N-(3-methylphenyl)-4-oxo-1,4-dihydropyrido[1,2-a]pyrrolo[2,3-d]pyrimidine-2-carboxamide1,9-dimethyl-N-(3-methylphenyl)-4-oxo-1,4-dihydropyrido[1,2-a]pyrrolo[2,3-d]pyrimidine-2-carboxamideC20H18N4O2
45171853-10-4(Z)-3-amino-3-[(4-methoxyphenyl)methylamino]-2-[(Z)-(3-oxo-1H-indol-2- ylidene)methyl]prop-2-enenitrile(Z)-3-amino-3-[(4-methoxyphenyl)methylamino]-2-[(Z)-(3-oxo-1H-indol-2- ylidene)methyl]prop-2-enenitrile
2-Propenenitrile, 3-amino-2-[(1,3-dihydro-3-oxo-2H-indol-2-ylidene)methyl]-3-[[(4-methoxyphenyl)methyl]amino]-
C20H18N4O2
4681912-97-22H-Indol-2-one, 3-[(2,3-dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)imino]-1,3-dihydro-5-methyl-2H-Indol-2-one, 3-[(2,3-dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)imino]-1,3-dihydro-5-methyl-C20H18N4O2
47214599-11-8(4Z)-4-[(dimethylamino)({7-methylimidazo[1,2-a]pyridin-3-yl})methylidene]-2-phenyl-4,5-dihydro-1,3-oxazol-5-one(4Z)-4-[(dimethylamino)({7-methylimidazo[1,2-a]pyridin-3-yl})methylidene]-2-phenyl-4,5-dihydro-1,3-oxazol-5-one
4-[(z)-(dimethylamino)(7-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-2-phenyl-1,3-oxazol-5-one
C20H18N4O2

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