| 1 | 3614-47-9 | 肼卡巴嗪 | hydracarbazine | C5H7N5O
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| 2 | 6761-52-0 | 3-氨基吡嗪-2-碳酰肼 | 3-AMINOPYRAZINE-2-CARBOHYDRAZIDE | C5H7N5O
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| 3 | | 4,6-DIAMINO-5-FORMAMIDOPYRIMIDINE | 4,6-DIAMINO-5-FORMAMIDOPYRIMIDINE | C5H7N5O
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| 4 | 56472-03-8 | 2-4-6-DIAMINO-5-NITROSO PYRIMIDINE | 2-4-6-DIAMINO-5-NITROSO PYRIMIDINE | C5H7N5O
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| 5 | 66131-74-6 | 2,4-二氨基嘧啶-5-甲酰胺 | 2,4-Diaminopyrimidine-5-carboxamide | C5H7N5O
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| 6 | 2283190-21-4 | 6-hydrazinylpyrimidine-4-carboxamide | 6-hydrazinylpyrimidine-4-carboxamide | C5H7N5O
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| 7 | 30835-20-2 | 4-Pyrimidinecarboxamide, 5,6-diamino- | 4-Pyrimidinecarboxamide, 5,6-diamino- | C5H7N5O
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| 8 | 138598-50-2 | Acetamide, 2-amino-N-1,2,4-triazin-3-yl- | Acetamide, 2-amino-N-1,2,4-triazin-3-yl- | C5H7N5O
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| 9 | 646998-82-5 | Hydrazinecarboxamide, N-pyrazinyl- (9CI) | Hydrazinecarboxamide, N-pyrazinyl- (9CI) | C5H7N5O
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| 10 | 227611-77-0 | 1H-Imidazo[1,2-b]pyrazol-2-ol, 6,7-diamino- | 1H-Imidazo[1,2-b]pyrazol-2-ol, 6,7-diamino- | C5H7N5O
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| 11 | 82302-18-9 | 5-Pyrimidinecarboximidamide,4-amino-N-hydroxy- | 5-Pyrimidinecarboximidamide,4-amino-N-hydroxy- | C5H7N5O
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| 12 | 606490-06-6 | 2H-Purin-2-one, 6-amino-3,4,5,7-tetrahydro- (9CI) | 2H-Purin-2-one, 6-amino-3,4,5,7-tetrahydro- (9CI) | C5H7N5O
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| 13 | 186302-36-3 | Cyclopropanecarboxamide, N-1H-tetrazol-5-yl- (9CI) | Cyclopropanecarboxamide, N-1H-tetrazol-5-yl- (9CI) | C5H7N5O
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| 14 | 87362-16-1 | 2-Pyrimidinecarboxylic acid, 5-amino-, hydrazide | 2-Pyrimidinecarboxylic acid, 5-amino-, hydrazide | C5H7N5O
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| 15 | 877321-99-8 | 1H-Pyrazolo[1,5-b][1,2,4]triazol-7-amine, 1-methoxy- | 1H-Pyrazolo[1,5-b][1,2,4]triazol-7-amine, 1-methoxy- | C5H7N5O
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| 16 | 92922-18-4 | 4H-Imidazo[1,2-d]tetrazole, 4-acetyl-5,6-dihydro- (9CI) | 4H-Imidazo[1,2-d]tetrazole, 4-acetyl-5,6-dihydro- (9CI) | C5H7N5O
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| 17 | 1469468-67-4 | 2-氨基-6,7-二氢-[1,2,4]三唑[1,5-A]嘧啶-5(1H)-酮 | 2-amino-4H,5H,6H,7H-[1,2,4]triazolo[1,5-a]pyrimidin-5-one | C5H7N5O
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| 18 | 537698-26-3 | Cyanamide, [5-(dimethylamino)-1,3,4-oxadiazol-2-yl]- (9CI) | Cyanamide, [5-(dimethylamino)-1,3,4-oxadiazol-2-yl]- (9CI) | C5H7N5O
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| 19 | | 4,6-DIAMINO-5-FORMAMIDOPYRIMIDINE (FORMYL-13C, DIAMINO-15N2) | 4,6-DIAMINO-5-FORMAMIDOPYRIMIDINE (FORMYL-13C, DIAMINO-15N2) | C5H7N5O
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| 20 | 500542-36-9 | 2-Pyrimidinecarboximidamide, 6-amino-1,4-dihydro-4-oxo- (9CI) | 2-Pyrimidinecarboximidamide, 6-amino-1,4-dihydro-4-oxo- (9CI) | C5H7N5O
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| 21 | 766446-61-1 | 1H-1,2,3-Triazolo[4,5-d]pyrimidine,4,7-dihydro-7-methoxy-(9CI) | 1H-1,2,3-Triazolo[4,5-d]pyrimidine,4,7-dihydro-7-methoxy-(9CI) | C5H7N5O
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| 22 | 461692-49-9 | Acetaldehyde, (2,5-dihydro-5-oxo-1,2,4-triazin-3-yl)hydrazone (9CI) | Acetaldehyde, (2,5-dihydro-5-oxo-1,2,4-triazin-3-yl)hydrazone (9CI) | C5H7N5O
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| 23 | 956325-65-8 | Pyrazolo[3,4-d]-1,2,3-triazole, 1,4-dihydro-1-hydroxy-4,6-dimethyl- | Pyrazolo[3,4-d]-1,2,3-triazole, 1,4-dihydro-1-hydroxy-4,6-dimethyl- | C5H7N5O
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| 24 | 337963-42-5 | 4H-Pyrazolo[3,4-d]pyrimidin-4-one, 6-amino-1,3a,5,7a-tetrahydro- (9CI) | 4H-Pyrazolo[3,4-d]pyrimidin-4-one, 6-amino-1,3a,5,7a-tetrahydro- (9CI) | C5H7N5O
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| 25 | 371226-98-1 | Pyrazolo[3,4-d]-1,2,3-triazole, 3,4-dihydro-4,6-dimethyl-, 1-oxide (9CI) | Pyrazolo[3,4-d]-1,2,3-triazole, 3,4-dihydro-4,6-dimethyl-, 1-oxide (9CI) | C5H7N5O
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| 26 | 169511-84-6 | Pyrazolo[3,4-d]-1,2,3-triazol-6(1H)-one, 4,5-dihydro-4,5-dimethyl- (9CI) | Pyrazolo[3,4-d]-1,2,3-triazol-6(1H)-one, 4,5-dihydro-4,5-dimethyl- (9CI) | C5H7N5O
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